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Ronald de Groot

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Lilly M Verhagen; Adilia Warris; Ronald de Groot; Maaike Luesink; Peter W M Hermans
Bacterial respiratory pathogens in children with inherited immune and airway disorders: nasopharyngeal carriage and disease risk.
Hanne K Brand; Ronald de Groot; Gerben Ferwerda; Chris Neeleman; Frank Preijers; Frank J T Staal; Adilia Warris; Peter W M Hermans
CD4+ T-cell counts and interleukin-8 and CCL-5 plasma concentrations discriminate disease severity in children with RSV infection.
Vishal Hira; Alike Kamerbeek; René F Kornelisse; Marcel Sluijter; Ronald de Groot; W H F Goessens; Peter W M Hermans
Colonization dynamics of antibiotic-resistant coagulase-negative Staphylococci in neonates.

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2013: Lilly M Verhagen; Adilia Warris; Ronald de Groot; Maaike Luesink; Peter W M Hermans
Bacterial respiratory pathogens in children with inherited immune and airway disorders: nasopharyngeal carriage and disease risk.
The Pediatric infectious disease journal 2013;32(4):399-404.
2013: Hanne K Brand; Ronald de Groot; Gerben Ferwerda; Chris Neeleman; Frank Preijers; Frank J T Staal; Adilia Warris; Peter W M Hermans
CD4+ T-cell counts and interleukin-8 and CCL-5 plasma concentrations discriminate disease severity in children with RSV infection.
Pediatric research 2013;73(2):187-93.
2013: Vishal Hira; Alike Kamerbeek; René F Kornelisse; Marcel Sluijter; Ronald de Groot; W H F Goessens; Peter W M Hermans
Colonization dynamics of antibiotic-resistant coagulase-negative Staphylococci in neonates.
Journal of clinical microbiology 2013;51(2):595-7.
2013: Inge Ahout; Gerben Ferwerda; Ronald de Groot
Elucidation and clinical role of emerging viral respiratory tract infections in children.
Advances in experimental medicine and biology 2013;764():191-204.
2012: Kim H Brand; Ronald de Groot; Gerben Ferwerda; Inge M L Ahout; Adilia Warris; Peter W M Hermans
Use of MMP-8 and MMP-9 to assess disease severity in children with viral lower respiratory tract infections.
Journal of medical virology 2012;84(9):1471-80.
2012: Ronald de Groot; Adilia Warris
29th ESPID Annual Meeting in The Hague, the Netherlands.
The Pediatric infectious disease journal 2012;31(4):404.
2012: H Kim Brand; Marianne L Brouwer; Ronald de Groot; Joep M D Galama; Peter W M Hermans; Willem J G Melchers; Karin Teuwen; Adilia Warris
Infection with multiple viruses is not associated with increased disease severity in children with bronchiolitis.
Pediatric pulmonology 2012;47(4):393-400.
2011: G Ingrid J G Rours; Eric A P Steegers; Elizabeth A E van der Zwaan; Roel P Verkooijen; Hendrina F M Willemse; Lidia R Arends; Ronald de Groot; Liesbeth Duijts; Albert Hofman; Vincent W Jaddoe; Johan P Mackenbach; Henriette A Moll; Alewijn Ott; Henri A Verbrugh
Chlamydia trachomatis infection during pregnancy associated with preterm delivery: a population-based prospective cohort study.
European journal of epidemiology 2011;26(6):493-502.
2011: G Ingrid J G Rours; Henri A Verbrugh; Hendrina F M Willemse; Luc J I Zimmermann; Ronald de Groot; Ronald R de Krijger; RF Kornelisse; Alewijn Ott; Roel P Verkooijen
Chlamydia trachomatis and placental inflammation in early preterm delivery.
European journal of epidemiology 2011;26(5):421-8.
2011: Joost A M Labout; Liesbeth Duijts; Ankie Lebon; Ronald de Groot; Albert Hofman; Vincent V W Jaddoe; Henri A Verbrugh; Peter W M Hermans; Henriëtte A Moll
Risk factors for otitis media in children with special emphasis on the role of colonization with bacterial airway pathogens: the Generation R study.
European journal of epidemiology 2011;26(1):61-6.
2011: Jeroen J A van Kampen; Peter C Burgers; Ronald de Groot; Rob A Gruters; Theo M Luider
Biomedical application of MALDI mass spectrometry for small-molecule analysis.
Mass spectrometry reviews 2011;30(1):101-20.
2010: Vishal Hira; Marcel Sluijter; W H F Goessens; Alewijn Ott; Ronald de Groot; Peter W M Hermans; René F Kornelisse
Coagulase-negative staphylococcal skin carriage among neonatal intensive care unit personnel: from population to infection.
Journal of clinical microbiology 2010;48(11):3876-81.
2010: Sonia Davila; Victoria J Wright; Chiea C Khor; Kar Seng Sim; Alexander Binder; Willemijn B Breunis; David Inwald; Simon Nadel; Helen Betts; Enitan D Carrol; Ronald de Groot; Peter W M Hermans; Jan Hazelzet; Marieke Emonts; Chui Chin Lim; Taco W Kuijpers; Federico Martinon-Torres; Antonio Salas; Werner Zenz; Michael Levin; Martin L Hibberd
Genome-wide association study identifies variants in the CFH region associated with host susceptibility to meningococcal disease.
Nature genetics 2010;42(9):772-6.
2010: Edwin Rietveld; Ewout W Steyerberg; Johan J Polder; Henk J Veeze; Yvonne Vergouwe; Marianne W A Huysman; Ronald de Groot; Henriëtte A Moll
Passive immunisation against respiratory syncytial virus: a cost-effectiveness analysis.
Archives of disease in childhood 2010;95(7):493-8.
2010: Marieke Emonts; Clementien L Vermont; Jeanine J Houwing-Duistermaat; Elene Haralambous; Christa E Gaast-de Jongh; Jan A Hazelzet; Saul N Faust; Helen Betts; Peter W M Hermans; Michael Levin; Ronald de Groot
Polymorphisms in PARP, IL1B, IL4, IL10, C1INH, DEFB1, and DEFA4 in meningococcal disease in three populations.
Shock (Augusta, Ga.) 2010;34(1):17-22.
2010: Tamara N Bongers; Marieke Emonts; Moniek P M de Maat; Ronald de Groot; Ton Lisman; Jan A Hazelzet; Frank W G Leebeek
Reduced ADAMTS13 in children with severe meningococcal sepsis is associated with severity and outcome.
Thrombosis and haemostasis 2010;103(6):1181-7.
2010: Jeroen J A van Kampen; Mariska L Reedijk; Peter C Burgers; Lennard Dekker; Nico G Hartwig; Ineke E van der Ende; Ronald de Groot; Albert D M E Osterhaus; David M Burger; Theo M Luider; Rob A Gruters
Ultra-fast analysis of plasma and intracellular levels of HIV protease inhibitors in children: a clinical application of MALDI mass spectrometry.
PloS one 2010;5(7):e11409.
2010: H K Brand; P W M Hermans; Ronald de Groot
Host biomarkers and paediatric infectious diseases: from molecular profiles to clinical application.
Advances in experimental medicine and biology 2010;659():19-31.
2009: G I J G Rours; M R Hammerschlag; G J J van Doornum; W C J Hop; Ronald de Groot; H F M Willemse; Henri A Verbrugh; Roel P Verkooyen
Chlamydia trachomatis respiratory infection in Dutch infants.
Archives of disease in childhood 2009;94(9):705-7.
2009: Wouter T Hendriksen; Hester J Bootsma; Angela van Diepen; Silvia Estevão; Oscar P Kuipers; Ronald de Groot; Peter W M Hermans
Strain-specific impact of PsaR of Streptococcus pneumoniae on global gene expression and virulence.
Microbiology (Reading, England) 2009;155(Pt 5):1569-79.
2008: Joost A M Labout; Liesbeth Duijts; Lidia R Arends; Vincent W V Jaddoe; Albert Hofman; Ronald de Groot; Henri A Verbrugh; Peter W M Hermans; Henriëtte A Moll
Factors associated with pneumococcal carriage in healthy Dutch infants: the generation R study.
The Journal of pediatrics 2008;153(6):771-6.
2008: Jeroen J A van Kampen; Peter C Burgers; Rob A Gruters; Albert D M E Osterhaus; Ronald de Groot; Theo M Luider; Dietrich A Volmer
Quantitative analysis of antiretroviral drugs in lysates of peripheral blood mononuclear cells using MALDI-triple quadrupole mass spectrometry.
Analytical chemistry 2008;80(13):4969-75.
2008: Jeroen J A van Kampen; Peter C Burgers; Ronald de Groot; Albert D M E Osterhaus; Mariska L Reedijk; Esther J Verschuren; Rob A Gruters; Theo M Luider
Quantitative analysis of HIV-1 protease inhibitors in cell lysates using MALDI-FTICR mass spectrometry.
Analytical chemistry 2008;80(10):3751-6.
2008: Wouter T Hendriksen; Tomas G Kloosterman; Hester J Bootsma; Silvia Estevão; Ronald de Groot; Oscar P Kuipers; Peter W M Hermans
Site-specific contributions of glutamine-dependent regulator GlnR and GlnR-regulated genes to virulence of Streptococcus pneumoniae.
Infection and immunity 2008;76(3):1230-8.
2008: Ingrid G I J G Rours; Margaret R Hammerschlag; Alewijn Ott; Tjeerd J T H N De Faber; Henri A Verbrugh; Ronald de Groot; Roel P Verkooyen
Chlamydia trachomatis as a cause of neonatal conjunctivitis in Dutch infants.
Pediatrics 2008;121(2):e321-6.
2008: Wouter T Hendriksen; Hester J Bootsma; Silvia Estevão; Theo Hoogenboezem; Anne de Jong; Ronald de Groot; Oscar P Kuipers; Peter W M Hermans
CodY of Streptococcus pneumoniae: link between nutritional gene regulation and colonization.
Journal of bacteriology 2008;190(2):590-601.
2007: Marieke Emonts; Reinier H Veenhoven; Selma P Wiertsema; Jeanine J Houwing-Duistermaat; Vanessa Walraven; Ronald de Groot; Peter W M Hermans; Elisabeth A M Sanders
Genetic polymorphisms in immunoresponse genes TNFA, IL6, IL10, and TLR4 are associated with recurrent acute otitis media.
Pediatrics 2007;120(4):814-23.
2007: Jasper M Bos; Edwin Rietveld; Henriëtte A Moll; Ewout W Steyerberg; W Luytjes; Jan Wilschut; Ronald de Groot; Maarten J Postma
The use of health economics to guide drug development decisions: Determining optimal values for an RSV-vaccine in a model-based scenario-analytic approach.
Vaccine 2007;25(39-40):6922-9.
2007: Jeroen G Noordzij; Nico G Hartwig; Frank A W Verreck; Sandra de Bruin-Versteeg; Tjitske de Boer; Jaap T van Dissel; Ronald de Groot; Tom H M Ottenhoff; Jacques J M van Dongen
Two patients with complete defects in interferon gamma receptor-dependent signaling.
Journal of clinical immunology 2007;27(5):490-6.
2007: Marieke Emonts; Selma P Wiertsema; Reinier H Veenhoven; Jeanine J Houwing-Duistermaat; Vanessa Walraven; Ronald de Groot; Peter W M Hermans; Elisabeth A M Sanders
The 4G/4G plasminogen activator inhibitor-1 genotype is associated with frequent recurrence of acute otitis media.
Pediatrics 2007;120(2):e317-23.
2007: Marieke Emonts; Christa E de Jongh; Jeanine J Houwing-Duistermaat; Willem B van Leeuwen; Ronald de Groot; Henri A Verbrugh; Peter W M Hermans; Alex Van Belkum
Association between nasal carriage of Staphylococcus aureus and the human complement cascade activator serine protease C1 inhibitor (C1INH) valine vs. methionine polymorphism at amino acid position 480.
FEMS immunology and medical microbiology 2007;50(3):330-2.
2007: Vishal Hira; Marcel Sluijter; Silvia Estevão; Deborah Horst-Kreft; Alewijn Ott; Ronald de Groot; Peter W M Hermans; René F Kornelisse
Clinical and molecular epidemiologic characteristics of coagulase-negative staphylococcal bloodstream infections in intensive care neonates.
The Pediatric infectious disease journal 2007;26(7):607-12.
2007: Pieter L A Fraaij; Gwenda Verweel; Annemarie M C van Rossum; Nico G Hartwig; David Burger; Ronald de Groot
Indinavir/low-dose ritonavir containing HAART in HIV-1 infected children has potent antiretroviral activity, but is associated with side effects and frequent discontinuation of treatment.
Infection 2007;35(3):186-9.
2007: David Burger; Gwenda Verweel; N Rakhmanina; C P W G M Verwey-Van Wissen; Charles J L la Porte; Alina S Bergshoeff; Hermione Lyall; Nico G Hartwig; Hannah Green; S Soldin; Diana M Gibb; Ronald de Groot
Age-dependent pharmacokinetics of lamivudine in HIV-infected children.
Clinical pharmacology and therapeutics 2007;81(4):517-20.
2007: Jeroen J A van Kampen; Esther J Verschuren; Peter C Burgers; Theo M Luider; Ronald de Groot; Albert D M E Osterhaus; Rob A Gruters
Validation of an HIV-1 inactivation protocol that is compatible with intracellular drug analysis by mass spectrometry.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2007;847(1):38-44.
2007: Martine Maat; Corinne M P Buysse; Marieke Emonts; Lodewijk Spanjaard; Koen F M Joosten; Ronald de Groot; Jan A Hazelzet
Improved survival of children with sepsis and purpura: effects of age, gender, and era.
Critical care (London, England) 2007;11(5):R112.
2007: Gwenda Verweel; David Burger; Nancy Sheehan; Alina S Bergshoeff; Adilia Warris; Linda C van der Knaap; Gertjan Driessen; Ronald de Groot; Nico G Hartwig
Plasma concentrations of the HIV-protease inhibitor lopinavir are suboptimal in children aged 2 years and below.
Antiviral therapy 2007;12(4):453-8.
2006: Gwenda Verweel; Jesús Saavedra-Lozano; Annemarie M C van Rossum; Octavio Ramilo; Ronald de Groot
Initiating highly active antiretroviral therapy in human immunodeficiency virus type 1-infected children in Europe and the United States: comparing clinical practice to guidelines and literature evidence.
The Pediatric infectious disease journal 2006;25(11):987-94.
2006: Jeroen J A van Kampen; Peter C Burgers; Ronald de Groot; Theo M Luider
Qualitative and quantitative analysis of pharmaceutical compounds by MALDI-TOF mass spectrometry.
Analytical chemistry 2006;78(15):5403-11.
2006: Karin Hartman; Gwenda Verweel; Ronald de Groot; Nico G Hartwig
Detection of lipoatrophy in human immunodeficiency virus-1-infected children treated with highly active antiretroviral therapy.
The Pediatric infectious disease journal 2006;25(5):427-31.
2006: Edwin Rietveld; Yvonne Vergouwe; Ewout W Steyerberg; Marianne W A Huysman; Ronald de Groot; Henriëtte A Moll
Hospitalization for respiratory syncytial virus infection in young children: development of a clinical prediction rule.
The Pediatric infectious disease journal 2006;25(3):201-7.
2006: Debby Bogaert; Emma Holmlund; Mika Lahdenkari; Ronald de Groot; Terhi Kilpi; Peter W M Hermans; Helena Kayhty
Development of antibodies against the putative proteinase maturation protein A in relation to pneumococcal carriage and otitis media.
FEMS immunology and medical microbiology 2006;46(2):166-8.
2006: Clementien L Vermont; Jan A Hazelzet; Ester D De Kleijn; Germie van den Dobbelsteen; Ronald de Groot
CC and CXC chemokine levels in children with meningococcal sepsis accurately predict mortality and disease severity.
Critical care (London, England) 2006;10(1):R33.
2006: Debby Bogaert; Marcel Sluijter; N Lemmens-den Toom; Tim Mitchell; W H F Goessens; S C Clarke; Ronald de Groot; Peter W M Hermans
Dynamics of pneumococcal colonization in healthy Dutch children.
Microbiology (Reading, England) 2006;152(Pt 2):377-85.
2006: Manon J van der Lee; Gwenda Verweel; Ronald de Groot; David Burger
Pharmacokinetics of a once-daily regimen of lopinavir/ritonavir in HIV-1-infected children.
Antiviral therapy 2006;11(4):439-45.
2006: Adilia Warris; Ronald de Groot
Human metapneumovirus: an important cause of acute respiratory illness.
Advances in experimental medicine and biology 2006;582():251-64.
2005: G I J G Rours; Roel P Verkooyen; H F M Willemse; E A E van der Zwaan; Alex Van Belkum; Ronald de Groot; Henri A Verbrugh; Jacobus M Ossewaarde
Use of pooled urine samples and automated DNA isolation to achieve improved sensitivity and cost-effectiveness of large-scale testing for Chlamydia trachomatis in pregnant women.
Journal of clinical microbiology 2005;43(9):4684-90.
2005: Clementien L Vermont; Marieke den Brinker; Nimet Kâkeci; Ester D De Kleijn; Yolanda B De Rijke; Koen F M Joosten; Ronald de Groot; Jan A Hazelzet
Serum lipids and disease severity in children with severe meningococcal sepsis.
Critical care medicine 2005;33(7):1610-5.
2005: Clementien L Vermont; Harry van Dijken; Ronald de Groot; Germie van den Dobbelsteen
Porin A-specific antibody avidity in patients who are convalescing from meningococcal B disease.
Pediatric research 2005;58(1):149-52.
2005: Alina S Bergshoeff; Pieter L A Fraaij; Jennifer Ndagijimana; Gwenda Verweel; Nico G Hartwig; Tim Niehues; Ronald de Groot; David Burger
Increased dose of lopinavir/ritonavir compensates for efavirenz-induced drug-drug interaction in HIV-1-infected children.
Journal of acquired immune deficiency syndromes (1999) 2005;39(1):63-8.
2005: Debby Bogaert; Reinier H Veenhoven; R Ramdin; Ingrid H T Luijendijk; G T Rijkers; Elisabeth A M Sanders; Ronald de Groot; Peter W M Hermans
Pneumococcal conjugate vaccination does not induce a persisting mucosal IgA response in children with recurrent acute otitis media.
Vaccine 2005;23(20):2607-13.
2005: Debby Bogaert; Peter W M Hermans; Hélène A M Boelens; Marcel Sluijter; Ad Luijendijk; H C Rumke; S Koppen; Alex Van Belkum; Ronald de Groot; Henri A Verbrugh
Epidemiology of nasopharyngeal carriage of Neisseria meningitidis in healthy Dutch children.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2005;40(6):899-902.
2005: Pieter L A Fraaij; Gwenda Verweel; Annemarie M C van Rossum; Ellen G van Lochem; Martin Schutten; Corry M R Weemaes; Nico G Hartwig; David Burger; Ronald de Groot
Sustained viral suppression and immune recovery in HIV type 1-infected children after 4 years of highly active antiretroviral therapy.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2005;40(4):604-8.
2005: Pieter L A Fraaij; Jeroen J A van Kampen; David Burger; Ronald de Groot
Pharmacokinetics of antiretroviral therapy in HIV-1-infected children.
Clinical pharmacokinetics 2005;44(9):935-56.
2005: Debby Bogaert; Reinier H Veenhoven; Marcel Sluijter; W J W Wannet; G T Rijkers; Tim Mitchell; S C Clarke; W H F Goessens; Anne G M Schilder; Elisabeth A M Sanders; Ronald de Groot; Peter W M Hermans
Molecular epidemiology of pneumococcal colonization in response to pneumococcal conjugate vaccination in children with recurrent acute otitis media.
Journal of clinical microbiology 2005;43(1):74-83.
2004: Alina S Bergshoeff; Pieter L A Fraaij; Corrien Verweij; Annemarie M C van Rossum; Gwenda Verweel; Nico G Hartwig; Ronald de Groot; David Burger
Plasma levels of zidovudine twice daily compared with three times daily in six HIV-1-infected children.
The Journal of antimicrobial chemotherapy 2004;54(6):1152-4.
2004: Mette D Hazenberg; Sigrid A Otto; Annemarie M C van Rossum; Henriëtte J Scherpbier; Ronald de Groot; Taco W Kuijpers; Joep M A Lange; Dörte Hamann; Rob J De Boer; José A M Borghans; Frank Miedema
Establishment of the CD4+ T-cell pool in healthy children and untreated children infected with HIV-1.
Blood 2004;104(12):3513-9.
2004: Debby Bogaert; Marcel Sluijter; Ronald de Groot; Peter W M Hermans
Multiplex opsonophagocytosis assay (MOPA): a useful tool for the monitoring of the 7-valent pneumococcal conjugate vaccine.
Vaccine 2004;22(29-30):4014-20.
2004: Mandy G Keijzer-Veen; Lianne Holty-van der Wekken; Rikard E Juttmann; Ronald de Groot; Hans Rümke
Reactogenicity of acellular pertussis vaccine in 4-year-olds in The Netherlands.
Vaccine 2004;22(25-26):3256-7.
2004: David Burger; Alina S Bergshoeff; Ronald de Groot; Diana M Gibb; Sarah Walker; Jean-Marc Tréluyer; Richard Hoetelmans
Maintaining the nelfinavir trough concentration above 0.8 mg/L improves virologic response in HIV-1-infected children.
The Journal of pediatrics 2004;145(3):403-5.
2004: Clementien L Vermont; Harry van Dijken; Ronald de Groot; Loek van Alphen; Germie van den Dobbelsteen
PorA-specific differences in antibody avidity after vaccination with a hexavalent Men B outer membrane vesicle vaccine in toddlers and school children.
Vaccine 2004;22(23-24):3008-13.
2004: Peter V Adrian; Debby Bogaert; Maartje Oprins; Satu Rapola; Mika Lahdenkari; Terhi Kilpi; Ronald de Groot; Helena Käyhty; Peter W M Hermans
Development of antibodies against pneumococcal proteins alpha-enolase, immunoglobulin A1 protease, streptococcal lipoprotein rotamase A, and putative proteinase maturation protein A in relation to pneumococcal carriage and Otitis Media.
Vaccine 2004;22(21-22):2737-42.
2004: Alison R Kerr; Peter V Adrian; Silvia Estevão; Ronald de Groot; G Alloing; Jean-Pierre Claverys; Tim Mitchell; Peter W M Hermans
The Ami-AliA/AliB permease of Streptococcus pneumoniae is involved in nasopharyngeal colonization but not in invasive disease.
Infection and immunity 2004;72(7):3902-6.
2004: Debby Bogaert; Reinier H Veenhoven; Marcel Sluijter; Elisabeth A M Sanders; Ronald de Groot; Peter W M Hermans
Colony blot assay: a useful method to detect multiple pneumococcal serotypes within clinical specimens.
FEMS immunology and medical microbiology 2004;41(3):259-64.
2004: Debby Bogaert; Alex Van Belkum; Marcel Sluijter; Ad Luijendijk; Ronald de Groot; Hans Rümke; Henri A Verbrugh; Peter W M Hermans
Colonisation by Streptococcus pneumoniae and Staphylococcus aureus in healthy children.
Lancet 2004;363(9424):1871-2.
2004: Debby Bogaert; Peter W M Hermans; Peter V Adrian; Hans Rümke; Ronald de Groot
Pneumococcal vaccines: an update on current strategies.
Vaccine 2004;22(17-18):2209-20.
2004: Alina S Bergshoeff; Pieter L A Fraaij; Annemarie M C van Rossum; Gwenda Verweel; L H Wynne; G A Winchell; R Y Leavitt; Bach-Yen Nguyen; Ronald de Groot; David Burger
Pharmacokinetics of indinavir combined with low-dose ritonavir in human immunodeficiency virus type 1-infected children.
Antimicrobial agents and chemotherapy 2004;48(5):1904-7.
2004: Pieter L A Fraaij; Natella Rakhmanina; David Burger; Ronald de Groot
Therapeutic drug monitoring in children with HIV/AIDS.
Therapeutic drug monitoring 2004;26(2):122-6.
2004: Pieter L A Fraaij; Jennifer Neubert; Alina S Bergshoeff; Annemarie M C van Rossum; Nico G Hartwig; Horst Schroten; Klaus Korn; David Burger; Ronald de Groot; Tim Niehues
Safety and efficacy of a NRTI-sparing HAART regimen of efavirenz and lopinavir/ritonavir in HIV-1-infected children.
Antiviral therapy 2004;9(2):297-9.
2004: Debby Bogaert; Ronald de Groot; Peter W M Hermans
Streptococcus pneumoniae colonisation: the key to pneumococcal disease.
The Lancet infectious diseases 2004;4(3):144-54.
2004: Jeroen J A van Kampen; Pieter L A Fraaij; Vishal Hira; Annemarie M C van Rossum; Nico G Hartwig; Ronald de Groot; Theo M Luider
A new method for analysis of AZT-triphosphate and nucleotide-triphosphates.
Biochemical and biophysical research communications 2004;315(1):151-9.
2004: Maarten J Postma; Jasper M Bos; Robert Welte; Ronald de Groot; W Luytjes; Hans Rümke; Philippe Beutels
Do costs of varicella justify routine infant vaccination? Pharmacoeconomic and clinical considerations.
The European journal of health economics : HEPAC : health economics in prevention and care 2004;5(1):54-7.
2004: Debby Bogaert; Paul van der Valk; Reshmi Ramdin; Marcel Sluijter; Evelyn Monninkhof; Ron Hendrix; Ronald de Groot; Peter W M Hermans
Host-pathogen interaction during pneumococcal infection in patients with chronic obstructive pulmonary disease.
Infection and immunity 2004;72(2):818-23.
2004: Marieke Emonts; Ronald de Groot
Sepsis syndrome in children: can we do better?
Advances in experimental medicine and biology 2004;549():63-70.
2003: Debby Bogaert; Peter W M Hermans; Ioanna N Grivea; G S Katopodis; Tim Mitchell; Marcel Sluijter; Ronald de Groot; Nicholas G Beratis; George A Syrogiannopoulos
Molecular epidemiology of penicillin-susceptible non-beta-lactam-resistant Streptococcus pneumoniae isolates from Greek children.
Journal of clinical microbiology 2003;41(12):5633-9.
2003: Bernadette van den Hoogen; G J J van Doornum; John C Fockens; Jan J Cornelissen; Walter Emil Philipp Beyer; Ronald de Groot; Albert D M E Osterhaus; Ron A M Fouchier
Prevalence and clinical symptoms of human metapneumovirus infection in hospitalized patients.
The Journal of infectious diseases 2003;188(10):1571-7.
2003: Pieter L A Fraaij; Alina S Bergshoeff; Annemarie M C van Rossum; Nico G Hartwig; David Burger; Ronald de Groot
Changes in indinavir exposure over time: a case study in six HIV-1-infected children.
The Journal of antimicrobial chemotherapy 2003;52(4):727-30.
2003: Marieke Emonts; Jan A Hazelzet; Ronald de Groot; Peter W M Hermans
Host genetic determinants of Neisseria meningitidis infections.
The Lancet infectious diseases 2003;3(9):565-77.
2003: Alina S Bergshoeff; Pieter L A Fraaij; Annemarie M C van Rossum; Tom F W Wolfs; S P M Geelen; Ronald de Groot; David Burger
Pharmacokinetics of nelfinavir in children: influencing factors and dose implications.
Antiviral therapy 2003;8(3):215-22.
2003: Ester D De Kleijn; Ronald de Groot; C Erik Hack; Paul G H Mulder; Werner Engl; Berta Moritz; Koen F M Joosten; Jan A Hazelzet
Activation of protein C following infusion of protein C concentrate in children with severe meningococcal sepsis and purpura fulminans: a randomized, double-blinded, placebo-controlled, dose-finding study.
Critical care medicine 2003;31(6):1839-47.
2003: Clementien L Vermont; Harry van Dijken; A J Kuipers; C J P van Limpt; W C M Keijzers; Arie van der Ende; Ronald de Groot; Loek van Alphen; Germie van den Dobbelsteen
Cross-reactivity of antibodies against PorA after vaccination with a meningococcal B outer membrane vesicle vaccine.
Infection and immunity 2003;71(4):1650-5.
2003: Jeroen G Noordzij; Nicole S Verkaik; Mirjam van der Burg; Lieneke R van Veelen; Sandra de Bruin-Versteeg; Wouter W Wiegant; Jaak M Vossen; Corry M R Weemaes; Ronald de Groot; Malgorzata Z Zdzienicka; Dik C van Gent; Jacques J M van Dongen
Radiosensitive SCID patients with Artemis gene mutations show a complete B-cell differentiation arrest at the pre-B-cell receptor checkpoint in bone marrow.
Blood 2003;101(4):1446-52.
2003: Clementien L Vermont; Germie van den Dobbelsteen; Ronald de Groot
Recent developments in vaccines to prevent meningococcal serogroup B infections.
Current opinion in molecular therapeutics 2003;5(1):33-8.
2003: Jeanne P Dieleman; Annemarie M C van Rossum; Bruno C H Stricker; Miriam C J M Sturkenboom; Ronald de Groot; Denise S C Telgt; Willem L Blok; David Burger; Bert G Blijenberg; Robert Zietse; Inge C Gyssens
Persistent leukocyturia and loss of renal function in a prospectively monitored cohort of HIV-infected patients treated with indinavir.
Journal of acquired immune deficiency syndromes (1999) 2003;32(2):135-42.
2003: Pieter L A Fraaij; Annemarie M C van Rossum; Katja C Wolthers; Ann C Vossen; Yvonne M Jeucken; Jac H Kuijpers; Ellen G van Lochem; Marijke Th L Roos; Ronald de Groot; Nico G Hartwig
Initation of highly active antiretroviral therapy leads to an HIV-specific immune response in a seronegative infant.
AIDS (London, England) 2003;17(1):138-40.
2003: Annemarie M C van Rossum; Menno I Gaakeer; Swenda Verweel; Nico G Hartwig; Tom F W Wolfs; S P M Geelen; Steven W J Lamberts; Ronald de Groot
Endocrinologic and immunologic factors associated with recovery of growth in children with human immunodeficiency virus type 1 infection treated with protease inhibitors.
The Pediatric infectious disease journal 2003;22(1):70-6.
2002: D C M Van der Kaay; Ester D De Kleijn; Yolanda B De Rijke; W C J Hop; Ronald de Groot; Jan A Hazelzet
Procalcitonin as a prognostic marker in meningococcal disease.
Intensive care medicine 2002;28(11):1606-12.
2002: Debby Bogaert; N T Ha; Marcel Sluijter; Nicole Lemmens; Ronald de Groot; Peter W M Hermans
Molecular epidemiology of pneumococcal carriage among children with upper respiratory tract infections in Hanoi, Vietnam.
Journal of clinical microbiology 2002;40(11):3903-8.
2002: Jeroen G Noordzij; Sandra de Bruin-Versteeg; Nicole S Verkaik; Jaak M Vossen; Ronald de Groot; Ewa Bernatowska; Anton Langerak; Dik C van Gent; Jacques J M van Dongen
The immunophenotypic and immunogenotypic B-cell differentiation arrest in bone marrow of RAG-deficient SCID patients corresponds to residual recombination activities of mutated RAG proteins.
Blood 2002;100(6):2145-52.
2002: Jeroen G Noordzij; Sandra de Bruin-Versteeg; Nico G Hartwig; Corry M R Weemaes; Egbert J A Gerritsen; Ewa Bernatowska; Stefaan van Lierde; Ronald de Groot; Jacques J M van Dongen
XLA patients with BTK splice-site mutations produce low levels of wild-type BTK transcripts.
Journal of clinical immunology 2002;22(5):306-18.
2002: Annemarie M C van Rossum; Alina S Bergshoeff; Pieter L A Fraaij; Patricia W H Hugen; Nico G Hartwig; S P M Geelen; Tom F W Wolfs; Corry M R Weemaes; Ronald de Groot; David Burger
Therapeutic drug monitoring of indinavir and nelfinavir to assess adherence to therapy in human immunodeficiency virus-infected children.
The Pediatric infectious disease journal 2002;21(8):743-7.
2002: Annemarie M C van Rossum; Jeanne P Dieleman; Pieter L A Fraaij; Karlien Cransberg; Nico G Hartwig; David Burger; Inge C Gyssens; Ronald de Groot
Persistent sterile leukocyturia is associated with impaired renal function in human immunodeficiency virus type 1-infected children treated with indinavir.
Pediatrics 2002;110(2 Pt 1):e19.
2002: Annemarie M C van Rossum; R A Hirasing; Ronald de Groot
[Epidemiological characteristics of reported HIV-1 infection in children in the Netherlands, 1998-2000: vertical transmission via parents from countries with a generalised epidemic].
Nederlands tijdschrift voor geneeskunde 2002;146(27):1282-5.
2002: Annemarie M C van Rossum; I E Kuiper; Pereira R Rodrigues; Henriëtte J Scherpbier; Tom F W Wolfs; Ronald de Groot
[Reduction of vertical transmission by means of perinatal prophylaxis in the case of children exposed to HIV-1 and born in the Netherlands during the period 1995-1999].
Nederlands tijdschrift voor geneeskunde 2002;146(27):1277-81.
2002: Martin C J Kneyber; Karel Moons; Ronald de Groot; Henriëtte A Moll
Prediction of duration of hospitalization in respiratory syncytial virus infection.
Pediatric pulmonology 2002;33(6):453-7.
2002: Ester D De Kleijn; Koen F M Joosten; Boukje Van Rijn; Marinke Westerterp; Ronald de Groot; Anita C S Hokken-Koelega; Jan A Hazelzet
Low serum cortisol in combination with high adrenocorticotrophic hormone concentrations are associated with poor outcome in children with severe meningococcal disease.
The Pediatric infectious disease journal 2002;21(4):330-6.
2002: Annemarie M C van Rossum; S P M Geelen; Nico G Hartwig; Tom F W Wolfs; Corry M R Weemaes; Henriëtte J Scherpbier; Ellen G van Lochem; Wim C J Hop; Martin Schutten; Albert D M E Osterhaus; David Burger; Ronald de Groot
Results of 2 years of treatment with protease-inhibitor--containing antiretroviral therapy in dutch children infected with human immunodeficiency virus type 1.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2002;34(7):1008-16.
2002: Clementien L Vermont; Ronald de Groot; Jan A Hazelzet
Bench-to-bedside review: genetic influences on meningococcal disease.
Critical care (London, England) 2002;6(1):60-5.
2002: Annemarie M C van Rossum; Pieter L A Fraaij; Ronald de Groot
Efficacy of highly active antiretroviral therapy in HIV-1 infected children.
The Lancet infectious diseases 2002;2(2):93-102.
2002: Gwenda Verweel; Annemarie M C van Rossum; Nico G Hartwig; Tom F W Wolfs; Henriëtte J Scherpbier; Ronald de Groot
Treatment with highly active antiretroviral therapy in human immunodeficiency virus type 1-infected children is associated with a sustained effect on growth.
Pediatrics 2002;109(2):E25.
2002: Jeroen G Noordzij; Sandra de Bruin-Versteeg; W Marieke Comans-Bitter; Nico G Hartwig; Rudolf W Hendriks; Ronald de Groot; Jacques J M van Dongen
Composition of precursor B-cell compartment in bone marrow from patients with X-linked agammaglobulinemia compared with healthy children.
Pediatric research 2002;51(2):159-68.
2002: Clementien L Vermont; Harry van Dijken; C J P van Limpt; Ronald de Groot; Loek van Alphen; Germie van den Dobbelsteen
Antibody avidity and immunoglobulin G isotype distribution following immunization with a monovalent meningococcal B outer membrane vesicle vaccine.
Infection and immunity 2002;70(2):584-90.
2001: Jan A Hazelzet; Ester D De Kleijn; Ronald de Groot
Endothelial protein C activation in meningococcal sepsis.
The New England journal of medicine 2001;345(24):1776-7.
2001: K Aleman; Jeroen G Noordzij; Ronald de Groot; Jacques J M van Dongen; Nico G Hartwig
Reviewing Omenn syndrome.
European journal of pediatrics 2001;160(12):718-25.
2001: Annemarie M C van Rossum; Henriëtte J Scherpbier; Ellen G van Lochem; Nadine Pakker; WA Slieker; Katja C Wolthers; Marijke Th L Roos; J H Kuijpers; Herbert Hooijkaas; Nico G Hartwig; S P M Geelen; Tom F W Wolfs; Joep M A Lange; Frank Miedema; Ronald de Groot
Therapeutic immune reconstitution in HIV-1-infected children is independent of their age and pretreatment immune status.
AIDS (London, England) 2001;15(17):2267-75.
2001: Ester D De Kleijn; L van Eijndhoven; Clementien L Vermont; Betsy Kuipers; Harry van Dijken; Hans Rümke; Ronald de Groot; Loek van Alphen; Germie van den Dobbelsteen
Serum bactericidal activity and isotype distribution of antibodies in toddlers and schoolchildren after vaccination with RIVM hexavalent PorA vesicle vaccine.
Vaccine 2001;20(3-4):352-8.
2001: P M van Tilburg; Debby Bogaert; Marcel Sluijter; A R Jansz; Ronald de Groot; Peter W M Hermans
Emergence of rifampin-resistant Streptococcus pneumoniae as a result of antimicrobial therapy for penicillin-resistant strains.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2001;33(8):e93-6.
2001: Annemarie M C van Rossum; Jeanne P Dieleman; Pieter L A Fraaij; Karlien Cransberg; Nico G Hartwig; Inge C Gyssens; Ronald de Groot
Indinavir-associated asymptomatic nephrolithiasis and renal cortex atrophy in two HIV-1 infected children.
AIDS (London, England) 2001;15(13):1745-7.
2001: Debby Bogaert; M N Engelen; A J Timmers-Reker; KP Elzenaar; Paul G H Peerbooms; Roel A Coutinho; Ronald de Groot; Peter W M Hermans
Pneumococcal carriage in children in The Netherlands: a molecular epidemiological study.
Journal of clinical microbiology 2001;39(9):3316-20.
2001: A Ferwerda; Henriëtte A Moll; Ronald de Groot
Respiratory tract infections by Mycoplasma pneumoniae in children: a review of diagnostic and therapeutic measures.
European journal of pediatrics 2001;160(8):483-91.
2001: Ester D De Kleijn; Ronald de Groot; Rianne van Gageldonk-Lafeber; J Labadie; C J P van Limpt; J Visser; Guy Berbers; Loek van Alphen; Hans Rümke
Prevention of meningococcal serogroup B infections in children: a protein-based vaccine induces immunologic memory.
The Journal of infectious diseases 2001;184(1):98-102.
2001: Bernadette van den Hoogen; J C de Jong; Jan Groen; Thijs Kuiken; Ronald de Groot; Ron A M Fouchier; Albert D M E Osterhaus
A newly discovered human pneumovirus isolated from young children with respiratory tract disease.
Nature medicine 2001;7(6):719-24.
2001: Thilo Menges; Peter W M Hermans; S G Little; TW Langefeld; O Böning; J Engel; Marcel Sluijter; Ronald de Groot; G Hempelmann
Plasminogen-activator-inhibitor-1 4G/5G promoter polymorphism and prognosis of severely injured patients.
Lancet 2001;357(9262):1096-7.
2001: Martin C J Kneyber; Karel Moons; Ronald de Groot; Henriëtte A Moll
Predictors of a normal chest x-ray in respiratory syncytial virus infection.
Pediatric pulmonology 2001;31(4):277-83.
2001: A Ferwerda; Henriëtte A Moll; W C Hop; J M Kouwenberg; C V Tjon Pian Gi; S G Robben; Ronald de Groot
Efficacy, safety and tolerability of 3 day azithromycin versus 10 day co-amoxiclav in the treatment of children with acute lower respiratory tract infections.
The Journal of antimicrobial chemotherapy 2001;47(4):441-6.
2001: David Burger; Annemarie M C van Rossum; Patricia W H Hugen; MH Suur; Nico G Hartwig; S P M Geelen; Henriëtte J Scherpbier; Richard Hoetelmans; Arnold G Vulto; Ronald de Groot
Pharmacokinetics of the protease inhibitor indinavir in human immunodeficiency virus type 1-infected children.
Antimicrobial agents and chemotherapy 2001;45(3):701-5.
2001: K Overweg; Debby Bogaert; Marcel Sluijter; Ronald de Groot; Peter W M Hermans
Molecular characteristics of penicillin-binding protein genes of penicillin-nonsusceptible Streptococcus pneumoniae isolated in the Netherlands.
Microbial drug resistance (Larchmont, N.Y.) 2001;7(4):323-34.
2000: Ester D De Kleijn; Ronald de Groot; Rianne van Gageldonk-Lafeber; J Labadie; K C van Limpt; J Visser; Guy Berbers; Loek van Alphen; Hans Rümke
Immunogenicity and safety of monovalent p1.7(h),4 meningococcal outer membrane vesicle vaccine in toddlers: comparison of two vaccination schedules and two vaccine formulations.
Vaccine 2000;19(9-10):1141-8.
2000: K Overweg; Debby Bogaert; Marcel Sluijter; J Yother; J Dankert; Ronald de Groot; Peter W M Hermans
Genetic relatedness within serotypes of penicillin-susceptible Streptococcus pneumoniae isolates.
Journal of clinical microbiology 2000;38(12):4548-53.
2000: Debby Bogaert; George A Syrogiannopoulos; Ioanna N Grivea; Ronald de Groot; Nicholas G Beratis; Peter W M Hermans
Molecular epidemiology of penicillin-nonsusceptible Streptococcus pneumoniae among children in Greece.
Journal of clinical microbiology 2000;38(12):4361-6.
2000: K Overweg; Marcel Sluijter; M Srodzinski; Ronald de Groot; Peter W M Hermans
Immune-protective antibodies against capsular polysaccharides do not affect natural competence of Streptococcus pneumoniae: implications for current conjugate vaccination strategies?
FEMS immunology and medical microbiology 2000;29(3):183-5.
2000: W H F Goessens; N Lemmens-den Toom; J Hageman; Peter W M Hermans; Marcel Sluijter; Ronald de Groot; Henri A Verbrugh
Evaluation of the Vitek 2 system for susceptibility testing of Streptococcus pneumoniae isolates.
European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology 2000;19(8):618-22.
2000: K Overweg; Christopher D Pericone; G G Verhoef; Jeffrey N Weiser; Hugo D Meiring; Ad P J M de Jong; Ronald de Groot; Peter W M Hermans
Differential protein expression in phenotypic variants of Streptococcus pneumoniae.
Infection and immunity 2000;68(8):4604-10.
2000: Jeroen G Noordzij; Nicole S Verkaik; Nico G Hartwig; Ronald de Groot; Dik C van Gent; Jacques J M van Dongen
N-terminal truncated human RAG1 proteins can direct T-cell receptor but not immunoglobulin gene rearrangements.
Blood 2000;96(1):203-9.
2000: K Overweg; A Kerr; Marcel Sluijter; M H Jackson; Tim Mitchell; Ad P J M de Jong; Ronald de Groot; Peter W M Hermans
The putative proteinase maturation protein A of Streptococcus pneumoniae is a conserved surface protein with potential to elicit protective immune responses.
Infection and immunity 2000;68(7):4180-8.
2000: Ewout W Steyerberg; Ronald de Groot; Henriëtte A Moll
Long-term effects of respiratory syncytial virus (RSV) bronchiolitis in infants and young children: a quantitative review.
Acta paediatrica (Oslo, Norway : 1992) 2000;89(6):654-60.
2000: Martin C J Kneyber; Henriëtte A Moll; Ronald de Groot
Treatment and prevention of respiratory syncytial virus infection.
European journal of pediatrics 2000;159(6):399-411.
2000: Annemarie M C van Rossum; Hubert G M Niesters; S P M Geelen; Henriëtte J Scherpbier; Nico G Hartwig; Corry M R Weemaes; A J Veerman; MH Suur; Elisabeth R De Graeff-Meeder; WA Slieker; Wim C J Hop; Albert D M E Osterhaus; David Burger; Ronald de Groot
Clinical and virologic response to combination treatment with indinavir, zidovudine, and lamivudine in children with human immunodeficiency virus-1 infection: a multicenter study in the Netherlands. On behalf of the Dutch Study Group for Children with HIV-1 infections.
The Journal of pediatrics 2000;136(6):780-8.
2000: E de Vries; Sandra de Bruin-Versteeg; W Marieke Comans-Bitter; Ronald de Groot; Wim C J Hop; GJ Boerma; Fred K Lotgering; Pieter J J Sauer; Jacques J M van Dongen
Neonatal blood lymphocyte subpopulations: a different perspective when using absolute counts.
Biology of the neonate 2000;77(4):230-5.
2000: E de Vries; Sandra de Bruin-Versteeg; W Marieke Comans-Bitter; Ronald de Groot; Wim C J Hop; GJ Boerma; Fred K Lotgering; Jacques J M van Dongen
Longitudinal survey of lymphocyte subpopulations in the first year of life.
Pediatric research 2000;47(4 Pt 1):528-37.
2000: Mirjam van der Burg; Ronald de Groot; W Marieke Comans-Bitter; J C den Hollander; Herbert Hooijkaas; H J Neijens; Rolf M F Berger; Arnold P Oranje; Anton Langerak; Jacques J M van Dongen
Autoimmune lymphoproliferative syndrome (ALPS) in a child from consanguineous parents: a dominant or recessive disease?
Pediatric research 2000;47(3):336-43.
2000: Ester D De Kleijn; Ronald de Groot; J Labadie; Rianne van Gageldonk-Lafeber; Germie van den Dobbelsteen; Loek van Alphen; Harry van Dijken; Betsy Kuipers; G W van Omme; M Wala; Rikard E Juttmann; Hans Rümke
Immunogenicity and safety of a hexavalent meningococcal outer-membrane-vesicle vaccine in children of 2-3 and 7-8 years of age.
Vaccine 2000;18(15):1456-66.
2000: Martin C J Kneyber; Ronald de Groot; Henriëtte A Moll
[Low incidence of nosocomial respiratory syncytial virus infections among children younger than 12 months in the Department of Pediatrics, Sophia Children's Hospital at Rotterdam].
Nederlands tijdschrift voor geneeskunde 2000;144(1):24-7.
1999: Peter W M Hermans; Martin L Hibberd; Robert Booy; O Daramola; Jan A Hazelzet; Ronald de Groot; Michael Levin
4G/5G promoter polymorphism in the plasminogen-activator-inhibitor-1 gene and outcome of meningococcal disease. Meningococcal Research Group.
Lancet 1999;354(9178):556-60.
1999: E de Vries; Ronald de Groot; Sandra de Bruin-Versteeg; W Marieke Comans-Bitter; Jacques J M van Dongen
Analysing the developing lymphocyte system of neonates and infants.
European journal of pediatrics 1999;158(8):611-7.
1999: K Overweg; Peter W M Hermans; Krzysztof Trzcinski; Marcel Sluijter; Ronald de Groot; Waleria Hryniewicz
Multidrug-resistant Streptococcus pneumoniae in Poland: identification of emerging clones.
Journal of clinical microbiology 1999;37(6):1739-45.
1999: E de Vries; Sandra de Bruin-Versteeg; W Marieke Comans-Bitter; Ronald de Groot; GJ Boerma; Fred K Lotgering; Jacques J M van Dongen
Correction for erythroid cell contamination in microassay for immunophenotyping of neonatal lymphocytes.
Archives of disease in childhood. Fetal and neonatal edition 1999;80(3):F226-9.
1999: PH Rothbarth; Jan Groen; Arthur Bohnen; Ronald de Groot; Albert D M E Osterhaus
Influenza virus serology--a comparative study.
Journal of virological methods 1999;78(1-2):163-9.
1998: J T M Voeten; Jan Groen; D van Alphen; Eric C J Claas; Ronald de Groot; Albert D M E Osterhaus; Guus F Rimmelzwaan
Use of recombinant nucleoproteins in enzyme-linked immunosorbent assays for detection of virus-specific immunoglobulin A (IgA) and IgG antibodies in influenza virus A- or B-infected patients.
Journal of clinical microbiology 1998;36(12):3527-31.
1998: James W T Cohen Stuart; WA Slieker; G T Rijkers; A Noest; Charles A B Boucher; MH Suur; R de Boer; S P M Geelen; Henriëtte J Scherpbier; Nico G Hartwig; Herbert Hooijkaas; Marijke Th L Roos; B de Graeff-Meeder; Ronald de Groot
Early recovery of CD4+ T lymphocytes in children on highly active antiretroviral therapy. Dutch study group for children with HIV infections.
AIDS (London, England) 1998;12(16):2155-9.
1998: Ester D De Kleijn; Jan A Hazelzet; RF Kornelisse; Ronald de Groot
Pathophysiology of meningococcal sepsis in children.
European journal of pediatrics 1998;157(11):869-80.
1998: Jan A Hazelzet; Ronald de Groot; Geertje J D van Mierlo; Koen F M Joosten; EM van der Voort; Anke J M Eerenberg; MH Suur; Wim C J Hop; C Erik Hack
Complement activation in relation to capillary leakage in children with septic shock and purpura.
Infection and immunity 1998;66(11):5350-6.
1998: E de Vries; Sandra de Bruin-Versteeg; W Marieke Comans-Bitter; Jacques J M van Dongen; Ronald de Groot; GJ Boerma; Fred K Lotgering
Longitudinal follow-up of blood lymphocyte subpopulations from birth to 1 year of age.
The Journal of pediatrics 1998;133(4):586-8.
1998: Marcel Sluijter; H Faden; Ronald de Groot; Nicole Lemmens; W H F Goessens; Alex Van Belkum; Peter W M Hermans
Molecular characterization of pneumococcal nasopharynx isolates collected from children during their first 2 years of life.
Journal of clinical microbiology 1998;36(8):2248-53.
1998: Martin C J Kneyber; AH Brandenburg; Ronald de Groot; K F Joosten; PH Rothbarth; A Ott; Henriëtte A Moll
Risk factors for respiratory syncytial virus associated apnoea.
European journal of pediatrics 1998;157(4):331-5.
1998: MA Hoijer; Ronald de Groot; Lisette van Lieshout; Bart C Jacobs; Marie-José Melief; MP Hazenberg
Differences in N-acetylmuramyl-L-alanine amidase and lysozyme in serum and cerebrospinal fluid of patients with bacterial meningitis.
The Journal of infectious diseases 1998;177(1):102-6.
1997: Jan A Hazelzet; RF Kornelisse; T C van der Pouw Kraan; Koen F M Joosten; EM van der Voort; Geertje J D van Mierlo; MH Suur; Wim C J Hop; Ronald de Groot; C Erik Hack
Interleukin 12 levels during the initial phase of septic shock with purpura in children: relation to severity of disease.
Cytokine 1997;9(9):711-6.
1997: RF Kornelisse; Jan A Hazelzet; Wim C J Hop; L Spanjaard; MH Suur; EM van der Voort; Ronald de Groot
Meningococcal septic shock in children: clinical and laboratory features, outcome, and development of a prognostic score.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 1997;25(3):640-6.
1997: Peter W M Hermans; Marcel Sluijter; KP Elzenaar; A van Veen; Joris Schonkeren; F M Nooren; W J van Leeuwen; Albert J de Neeling; B van Klingeren; Henri A Verbrugh; Ronald de Groot
Penicillin-resistant Streptococcus pneumoniae in the Netherlands: results of a 1-year molecular epidemiologic survey.
The Journal of infectious diseases 1997;175(6):1413-22.
1997: W Marieke Comans-Bitter; Ronald de Groot; RW van den Beemd; H J Neijens; Wim C J Hop; Kees Groeneveld; Herbert Hooijkaas; Jacques J M van Dongen
Immunophenotyping of blood lymphocytes in childhood. Reference values for lymphocyte subpopulations.
The Journal of pediatrics 1997;130(3):388-93.
1997: RF Kornelisse; C Erik Hack; H F Savelkoul; T C van der Pouw Kraan; Wim C J Hop; Geertje J D van Mierlo; MH Suur; H J Neijens; Ronald de Groot
Intrathecal production of interleukin-12 and gamma interferon in patients with bacterial meningitis.
Infection and immunity 1997;65(3):877-81.
1997: Peter W M Hermans; Marcel Sluijter; Surang Dejsirilert; Nicole Lemmens; KP Elzenaar; A van Veen; W H F Goessens; Ronald de Groot
Molecular epidemiology of drug-resistant pneumococci: toward an international approach.
Microbial drug resistance (Larchmont, N.Y.) 1997;3(3):243-51.
1996: Jan A Hazelzet; I M Risseeuw-Appel; RF Kornelisse; W C Hop; I Dekker; Koen F M Joosten; Ronald de Groot; C Erik Hack
Age-related differences in outcome and severity of DIC in children with septic shock and purpura.
Thrombosis and haemostasis 1996;76(6):932-8.
1996: Ronald de Groot; Marcel Sluijter; A de Bruyn; J Campos; W H F Goessens; Arnold L. Smith; Peter W M Hermans
Genetic characterization of trimethoprim resistance in Haemophilus influenzae.
Antimicrobial agents and chemotherapy 1996;40(9):2131-6.
1996: A Karperien; J N van den Anker; P H Rothbarth; Ronald de Groot
Case of the month: a newborn with tachypnoea and consolidation of the right lung.
European journal of pediatrics 1996;155(9):827-9.
1996: RF Kornelisse; Marcel Sluijter; L Spanjaard; Peter W M Hermans; Ronald de Groot
Molecular epidemiological characteristics of pneumococcal meningitis in children.
European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology 1996;15(8):635-8.
1996: M C Kneyber; AH Brandenburg; PH Rothbarth; Ronald de Groot; A Ott; H A van Steensel-Moll
Relationship between clinical severity of respiratory syncytial virus infection and subtype.
Archives of disease in childhood 1996;75(2):137-40.
1996: RF Kornelisse; K Hoekman; JJ Visser; W C Hop; Jan G M Huijmans; P J van der Straaten; A J van der Heijden; R N Sukhai; Herman J Neijens; Ronald de Groot
The role of nitric oxide in bacterial meningitis in children.
The Journal of infectious diseases 1996;174(1):120-6.
1996: RF Kornelisse; Huub F J Savelkoul; P H Mulder; MH Suur; P J van der Straaten; A J van der Heijden; R N Sukhai; K Hählen; Herman J Neijens; Ronald de Groot
Interleukin-10 and soluble tumor necrosis factor receptors in cerebrospinal fluid of children with bacterial meningitis.
The Journal of infectious diseases 1996;173(6):1498-502.
1996: Alex Van Belkum; M Sluijuter; Ronald de Groot; Henri A Verbrugh; Peter W M Hermans
Novel BOX repeat PCR assay for high-resolution typing of Streptococcus pneumoniae strains.
Journal of clinical microbiology 1996;34(5):1176-9.
1996: RF Kornelisse; Jan A Hazelzet; Huub F J Savelkoul; W C Hop; MH Suur; A N Borsboom; I M Risseeuw-Appel; EM van der Voort; Ronald de Groot
The relationship between plasminogen activator inhibitor-1 and proinflammatory and counterinflammatory mediators in children with meningococcal septic shock.
The Journal of infectious diseases 1996;173(5):1148-56.
1995: RF Kornelisse; C M Westerbeek; A B Spoor; B van der Heijde; L Spanjaard; Herman J Neijens; Ronald de Groot
Pneumococcal meningitis in children: prognostic indicators and outcome.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 1995;21(6):1390-7.
1995: John N van den Anker; R C Schoemaker; W C Hop; B J van der Heijden; A Weber; Pieter J J Sauer; Herman J Neijens; Ronald de Groot
Ceftazidime pharmacokinetics in preterm infants: effects of renal function and gestational age.
Clinical pharmacology and therapeutics 1995;58(6):650-9.
1995: John N van den Anker; Ronald de Groot; H M Broerse; Pieter J J Sauer; B J van der Heijden; W C Hop; Jan Lindemans
Assessment of glomerular filtration rate in preterm infants by serum creatinine: comparison with inulin clearance.
Pediatrics 1995;96(6):1156-8.
1995: John N van den Anker; W C Hop; R C Schoemaker; B J van der Heijden; Herman J Neijens; Ronald de Groot
Ceftazidime pharmacokinetics in preterm infants: effect of postnatal age and postnatal exposure to indomethacin.
British journal of clinical pharmacology 1995;40(5):439-43.
1995: John N van den Anker; B J Van Der Heijden; W C Hop; R C Schoemaker; H M Broerse; Herman J Neijens; Ronald de Groot
The effect of asphyxia on the pharmacokinetics of ceftazidime in the term newborn.
Pediatric research 1995;38(5):808-11.
1995: John N van den Anker; R C Schoemaker; B J van der Heijden; H M Broerse; Herman J Neijens; Ronald de Groot
Once-daily versus twice-daily administration of ceftazidime in the preterm infant.
Antimicrobial agents and chemotherapy 1995;39(9):2048-50.
1995: Koen F M Joosten; Jan A Hazelzet; Harm A W M Tiddens; F W Hazebroek; G Dzoljic-Danilovic; H J Neijens; Ronald de Groot
Staphylococcal pneumonia in childhood: will early surgical intervention lower mortality?
Pediatric pulmonology 1995;20(2):83-8.
1995: Peter W M Hermans; Marcel Sluijter; Theo Hoogenboezem; H Heersma; Alex Van Belkum; Ronald de Groot
Comparative study of five different DNA fingerprint techniques for molecular typing of Streptococcus pneumoniae strains.
Journal of clinical microbiology 1995;33(6):1606-12.
1995: N G Hartwig; M Sinaasappel; S G F Robben; Ronald de Groot
Liver abscess caused by Haemophilus influenzae b in an infant.
The Pediatric infectious disease journal 1995;14(3):245-6.
1995: J J Huisman-de Boer; John N van den Anker; M Vogel; W H F Goessens; R C Schoemaker; Ronald de Groot
Amoxicillin pharmacokinetics in preterm infants with gestational ages of less than 32 weeks.
Antimicrobial agents and chemotherapy 1995;39(2):431-4.
1995: RF Kornelisse; Ronald de Groot; Herman J Neijens
Bacterial meningitis: mechanisms of disease and therapy.
European journal of pediatrics 1995;154(2):85-96.
1994: John N van den Anker; W C Hop; Ronald de Groot; B J van der Heijden; H M Broerse; Jan Lindemans; Pieter J J Sauer
Effects of prenatal exposure to betamethasone and indomethacin on the glomerular filtration rate in the preterm infant.
Pediatric research 1994;36(5):578-81.
1992: C T Koorevaar; P G Scherpenzeel; H J Neijens; Gerarda Derksen-Lubsen; G Dzoljic-Danilovic; Ronald de Groot
Childhood meningitis caused by enterococci and viridans streptococci.
Infection 1992;20(3):118-21.
1991: Ronald de Groot; G Dzoljic-Danilovic; B van Klingeren; W H Goessens; H J Neyens
Antibiotic resistance in Haemophilus influenzae: mechanisms, clinical importance and consequences for therapy.
European journal of pediatrics 1991;150(8):534-46.
1991: M J Smit; Ronald de Groot; J J van Dongen; Jan A Hazelzet; J F Sluiters; H J Neyens
[Pneumocystis carinii pneumonia in patients with a severe combined immunodeficiency].
Nederlands tijdschrift voor geneeskunde 1991;135(1):24-6.
1991: H J Neijens; Ronald de Groot; G Dzoljic-Danilovic
[Haemophilus influenzae type b infections in children].
Nederlands tijdschrift voor geneeskunde 1991;135(1):13-6.
1990: C E de Bel; Ronald de Groot; J J Schrander; P H Rothbarth
[Congenital cytomegalovirus infection].
Tijdschrift voor kindergeneeskunde 1990;58(6):211-7.
1990: J N van den Anker; Ronald de Groot; B J van der Heijden
Use of antibiotics in neonates weighing less than 1200 g.
The Pediatric infectious disease journal 1990;9(10):752-3.
1990: Herman J Neijens; Maarten Sinaasappel; Ronald de Groot; Johan C de Jongste; Shelley E Overbeek
Cystic fibrosis, pathophysiological and clinical aspects.
European journal of pediatrics 1990;149(11):742-51.
1990: M J Smit; Ronald de Groot; J J Van Dongen; E Van der Voort; Herman J Neijens; L R Whitfield
Trimetrexate efficacy and pharmacokinetics during treatment of refractory Pneumocystis carinii pneumonia in an infant with severe combined immunodeficiency disease.
The Pediatric infectious disease journal 1990;9(3):212-4; discussion 215.
1990: H J Neijens; Ronald de Groot; G Dzoljic-Danilovic
[Lung infections with atypical features].
Tijdschrift voor kindergeneeskunde 1990;58(1):23-9.
1988: Ronald de Groot; D Glover; C Clausen; Arnold L. Smith; C B Wilson
Bone and joint infections caused by Kingella kingae: six cases and review of the literature.
Reviews of infectious diseases 1988;10(5):998-1004.
1984: Ronald de Groot; C E Essed; J L Gaillard; J W Mettau; V H Villeneuve
Primary restrictive foramen ovale.
European journal of pediatrics 1984;141(4):248-9.
1983: Ronald de Groot; J W Mettau; G Dzoljić-Danilović; M F Michel
[Sepsis and meningitis in newborn and young infants cause by group B Streptococci (Streptococcus agalactiae)].
Nederlands tijdschrift voor geneeskunde 1983;127(48):2175-9.