FIND

researchers

DISCOVER

relevant articles

PROMOTE

your research

now for free

Jonathan Myers

Research Profile

Procedures

Exercise Test

Disorders

Concepts & Ideas

Living Beings

Veterans

Activities & Behaviors

Exercise

Physiology

Geographic Areas

California

Co-author Network

Publications

TOP 3
Jonathan Myers; Ricardo Oliveira; Mary Ann Peberdy; Erin West; Ross Arena; Euan Ashley; Daniel R Bensimhon; Lawrence P Cahalin; Paul Chase; Frederick E Dewey; Marco Guazzi; Daniel E Forman
Validation of a cardiopulmonary exercise test score in heart failure.
Nicholas J Leeper; Jonathan Myers; Kevin T Nead; Arshiya Syed; Margaret Zhou; Roxanne Diaz Caceres; Yoko Kojima; John P Cooke
Exercise capacity is the strongest predictor of mortality in patients with peripheral arterial disease.
Jonathan Myers; Troy Shahoumian; Ramya Gopalan; Jenny Kiratli
Effects of customized risk reduction program on cardiovascular risk in males with spinal cord injury.

Register for free to view:

Visualized networks:

See your personal network in
sophisticated graphical views

GeoTargeted Searches:

Locate experts around the world
and connect with global collaborators

Research Profiles:

See the research activity
of experts around the globe

Geonetwork of Jonathan Myers (preview)

Cities where this author has publications
Cities where co-authors of this author have publications

Flash Player Required

All Publications

2013: Jonathan Myers; Ricardo Oliveira; Mary Ann Peberdy; Erin West; Ross Arena; Euan Ashley; Daniel R Bensimhon; Lawrence P Cahalin; Paul Chase; Frederick E Dewey; Marco Guazzi; Daniel E Forman
Validation of a cardiopulmonary exercise test score in heart failure.
Circulation. Heart failure 2013;6(2):211-8.
2013: Nicholas J Leeper; Jonathan Myers; Kevin T Nead; Arshiya Syed; Margaret Zhou; Roxanne Diaz Caceres; Yoko Kojima; John P Cooke
Exercise capacity is the strongest predictor of mortality in patients with peripheral arterial disease.
Journal of vascular surgery 2013;57(3):728-33.
2012: Jonathan Myers; Troy Shahoumian; Ramya Gopalan; Jenny Kiratli
Effects of customized risk reduction program on cardiovascular risk in males with spinal cord injury.
Journal of rehabilitation research and development 2012;49(9):1355-64.
2012: Roberta K Oka; Christopher D Owens; Joseph Rapp; Jonathan Myers; Hugh F Alley; Michael S Conte; Gordon Fung; John C Giacomini; Emile R Mohler
Efficacy of optimal long-term management of multiple cardiovascular risk factors (CVD) on walking and quality of life in patients with peripheral artery disease (PAD): protocol for randomized controlled trial.
Vascular medicine (London, England) 2012;17(1):17-28.
2011: Jonathan Myers; Shilpy Chowdhury; Nikhil Jain; Kusum Lata; Paul McAuley; Victor Froelicher
The obesity paradox and weight loss.
The American journal of medicine 2011;124(10):924-30.
2011: Jonathan Myers; Alyssa Powell; Kimberly Smith; Ronald L Dalman; Holly Fonda
Cardiopulmonary exercise testing in small abdominal aortic aneurysm: profile, safety, and mortality estimates.
European journal of cardiovascular prevention and rehabilitation : official journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology 2011;18(3):459-66.
2010: Vy-Van Le; Teferi Mitiku; David Hadley; Jonathan Myers; Victor Froelicher
Exercise capacity at submaximal heart rate and prognosis.
International journal of cardiology 2010;142(2):145-51.
2010: Sandra Mandic; Holly Fonda; Frederick Dewey; Vy-van Le; Ricardo Stein; Matt Wheeler; Euan Ashley; Jonathan Myers; Victor F Froelicher
Effect of gender on computerized electrocardiogram measurements in college athletes.
The Physician and sportsmedicine 2010;38(2):156-64.
2010: Amir Kaykha; Jonathan Myers; Kenneth B Desser; Nathan Laufer; Victor F Froelicher
The prognostic importance of isolated P-Wave abnormalities.
Clinical cardiology 2010;33(6):E87-93.
2010: Vy-Van Le; Teferi Mitiku; David Hadley; Jonathan Myers; Victor F Froelicher
Rest premature ventricular contractions on routine ECG and prognosis in heart failure patients.
Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc 2010;15(1):56-62.
2009: Jonathan Myers; Ross Arena; Ricardo Oliveira; Daniel Bensimhon; Leon Hsu; Paul Chase; Marco Guazzi; Peter Brubaker; Brian Moore; Dalane Kitzman; Mary Ann Peberdy
The lowest VE/VCO2 ratio during exercise as a predictor of outcomes in patients with heart failure.
Journal of cardiac failure 2009;15(9):756-62.
2009: Vy-Van Le; Marco V Perez; Matthew T Wheeler; Jonathan Myers; Ingela Schnittger; Euan Ashley
Mechanisms of exercise intolerance in patients with hypertrophic cardiomyopathy.
American heart journal 2009;158(3):e27-34.
2009: Swee Yaw Tan; Gannon W Sungar; Jonathan Myers; Marcus Sandri; Victor Froelicher
A simplified clinical electrocardiogram score for the prediction of cardiovascular mortality.
Clinical cardiology 2009;32(2):82-6.
2009: Marco V Perez; Frederick E Dewey; Swee Y Tan; Jonathan Myers; Victor F Froelicher
Added value of a resting ECG neural network that predicts cardiovascular mortality.
Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc 2009;14(1):26-34.
2009: Jonathan Myers; Pradeep Gujja; Suresh Neelagaru; Leon Hsu; Timothy Vittorio; Tamika Jackson-Nelson; Daniel Burkhoff
End-tidal CO2 pressure and cardiac performance during exercise in heart failure.
Medicine and science in sports and exercise 2009;41(1):19-25.
2008: Amir H Sadrzadeh Rafie; Frederick E Dewey; Gannon W Sungar; Euan Ashley; David Hadley; Jonathan Myers; Victor F Froelicher
Age and double product (systolic blood pressure x heart rate) reserve-adjusted modification of the Duke Treadmill Score nomogram in men.
The American journal of cardiology 2008;102(10):1407-12.
2008: Jonathan Myers
The health benefits and economics of physical activity.
Current sports medicine reports 2008;7(6):314-6.
2008: Amir H Sadrzadeh Rafie; Gannon W Sungar; Frederick E Dewey; David Hadley; Jonathan Myers; Victor F Froelicher
Prognostic value of double product reserve.
European journal of cardiovascular prevention and rehabilitation : official journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology 2008;15(5):541-7.
2008: Vy-Van Le; Teferi Mitiku; Gannon Sungar; Jonathan Myers; Victor Froelicher
The blood pressure response to dynamic exercise testing: a systematic review.
Progress in cardiovascular diseases 2008;51(2):135-60.
2008: Amir H Sadrzadeh Rafie; Frederick E Dewey; Jonathan Myers; Victor F Froelicher
Age-adjusted modification of the Duke Treadmill Score nomogram.
American heart journal 2008;155(6):1033-8.
2008: Frederick E Dewey; John R Kapoor; Ryan S Williams; Michael Lipinski; Euan Ashley; David Hadley; Jonathan Myers; Victor F Froelicher
Ventricular arrhythmias during clinical treadmill testing and prognosis.
Archives of internal medicine 2008;168(2):225-34.
2007: Jonathan Myers; Pradeep Gujja; Suresh Neelagaru; Daniel Burkhoff
Cardiac output and cardiopulmonary responses to exercise in heart failure: application of a new bio-reactance device.
Journal of cardiac failure 2007;13(8):629-36.
2007: Paul McAuley; Jonathan Myers; Joshua Abella; Victor F Froelicher
Body mass, fitness and survival in veteran patients: another obesity paradox?
The American journal of medicine 2007;120(6):518-24.
2007: Jonathan Myers; Swee Y Tan; Joshua Abella; Vikram Aleti; Victor F Froelicher
Comparison of the chronotropic response to exercise and heart rate recovery in predicting cardiovascular mortality.
European journal of cardiovascular prevention and rehabilitation : official journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology 2007;14(2):215-21.
2007: M V Perez; T S Yaw; Jonathan Myers; Victor F Froelicher
Prognostic value of the computerized ECG in Hispanics.
Clinical cardiology 2007;30(4):189-94.
2007: Frederick E Dewey; James V Freeman; Gregory Engel; Raul Oviedo; Nayana Abrol; Natasha Ahmed; Jonathan Myers; Victor F Froelicher
Novel predictor of prognosis from exercise stress testing: heart rate variability response to the exercise treadmill test.
American heart journal 2007;153(2):281-8.
2007: Nicholas J Leeper; Frederick E Dewey; Euan Ashley; Marcus Sandri; Swee Yaw Tan; David Hadley; Jonathan Myers; Victor F Froelicher
Prognostic value of heart rate increase at onset of exercise testing.
Circulation 2007;115(4):468-74.
2007: Jonathan Myers; Heather Brown; Susan Smith; Inder Perkash; B Jenny Kiratli
Reproducibility of noninvasive cardiac output during arm exercise in spinal cord injury.
Journal of rehabilitation research and development 2007;44(4):547-52.
2006: Jonathan Myers; Nayma Zaheer; Susan Quaglietti; Rupa Madhavan; Victor Froelicher; Paul Heidenreich
Association of functional and health status measures in heart failure.
Journal of cardiac failure 2006;12(6):439-45.
2006: Euan Ashley; Attila Kardos; Ewan S Jack; Walter Habenbacher; Matthew Wheeler; Young M Kim; Jeffrey Froning; Jonathan Myers; Gregory Whyte; Victor F Froelicher; Pamela Douglas
Angiotensin-converting enzyme genotype predicts cardiac and autonomic responses to prolonged exercise.
Journal of the American College of Cardiology 2006;48(3):523-31.
2006: Matthew Lee; Jonathan Myers; Joshua Abella; Victor F Froelicher; Inder Perkash; B Jenny Kiratli
Homocysteine and hypertension in persons with spinal cord injury.
Spinal cord 2006;44(8):474-9.
2006: Paul McAuley; Jonathan Myers; Joshua Abella; Victor F Froelicher
Evaluation of a specific activity questionnaire to predict mortality in men referred for exercise testing.
American heart journal 2006;151(4):890.e1-7.
2006: James V Freeman; Frederick E Dewey; David M Hadley; Jonathan Myers; Victor F Froelicher
Autonomic nervous system interaction with the cardiovascular system during exercise.
Progress in cardiovascular diseases 2006;48(5):342-62.
2005: James Beckerman; Takuya Yamazaki; Jonathan Myers; Craig Boyle; Sung Chun; Paul Wang; Victor F Froelicher
T-wave abnormalities are a better predictor of cardiovascular mortality than ST depression on the resting electrocardiogram.
Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc 2005;10(2):146-51.
2005: Takuya Yamazaki; Jonathan Myers; Victor F Froelicher
Prognostic importance of isolated T-wave abnormalities.
The American journal of cardiology 2005;95(2):300-4.
2005: Takuya Yamazaki; Victor F Froelicher; Jonathan Myers; Sung Chun; Paul Wang
Spatial QRS-T angle predicts cardiac death in a clinical population.
Heart rhythm : the official journal of the Heart Rhythm Society 2005;2(1):73-8.
2005: Matthew Lee; Jonathan Myers; Amy Hayes; Sherna Madan; Victor F Froelicher; Inder Perkash; B Jenny Kiratli
C-reactive protein, metabolic syndrome, and insulin resistance in individuals with spinal cord injury.
The journal of spinal cord medicine 2005;28(1):20-5.
2005: James Beckerman; Anima Mathur; Stephen Stahr; Jonathan Myers; Sung Chun; Victor F Froelicher
Exercise-induced ventricular arrhythmias and cardiovascular death.
Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc 2005;10(1):47-52.
2004: Jonathan Myers; Amir Kaykha; Sheela George; Joshua Abella; Naima Zaheer; Scott Lear; Takuya Yamazaki; Victor F Froelicher
Fitness versus physical activity patterns in predicting mortality in men.
The American journal of medicine 2004;117(12):912-8.
2004: Takuya Yamazaki; Jonathan Myers; Victor F Froelicher
Effect of age and end point on the prognostic value of the exercise test.
Chest 2004;125(5):1920-8.
2004: Steve Lai; Amir Kaykha; Takuya Yamazaki; Mary Goldstein; Joshua M Spin; Jonathan Myers; Victor F Froelicher
Treadmill scores in elderly men.
Journal of the American College of Cardiology 2004;43(4):606-15.
2003: Manish Prakash; Sara Partington; Victor F Froelicher; Paul A Heidenreich; Jonathan Myers
The effect of ethnicity on survival in male veterans referred for electrocardiography and treadmill testing.
Archives of internal medicine 2003;163(18):2204-10.
2003: Jonathan Myers; Lars Gullestad; Daniel Bellin; Heather Ross; Randall H Vagelos; Michael Fowler
Physical activity patterns and exercise performance in cardiac transplant recipients.
Journal of cardiopulmonary rehabilitation 2003;23(2):100-6.
2003: Jonathan Myers
Cardiology patient pages. Exercise and cardiovascular health.
Circulation 2003;107(1):e2-5.
2003: Sara Partington; Jonathan Myers; Shaun Cho; Victor F Froelicher; Sung Chun
Prevalence and prognostic value of exercise-induced ventricular arrhythmias.
American heart journal 2003;145(1):139-46.
2002: Afshin Ghayoumi; Vinod Raxwal; Shaun Cho; Jonathan Myers; Sung Chun; Victor F Froelicher
Prognostic value of exercise tests in male veterans with chronic coronary artery disease.
Journal of cardiopulmonary rehabilitation 2002;22(6):399-407.
2002: Lynette W Lissin; Andre J Gauri; Victor F Froelicher; Afshin Ghayoumi; Jonathan Myers; John Giacommini
The prognostic value of body mass index and standard exercise testing in male veterans with congestive heart failure.
Journal of cardiac failure 2002;8(4):206-15.
2002: Manish Prakash; Vinod Raxwal; Victor F Froelicher; Damayanthi Kalisetti; Amy Vieira; Gail O'Mara; Rachel Marcus; Jonathan Myers; Jenny Kiratli; Inder Perkash
Electrocardiographic findings in patients with chronic spinal cord injury.
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists 2002;81(8):601-8.
2002: Joshua M Spin; Manish Prakash; Victor F Froelicher; Sara Partington; Rachel Marcus; Dat Do; Jonathan Myers
The prognostic value of exercise testing in elderly men.
The American journal of medicine 2002;112(6):453-9.
2002: Michael Lipinski; Victor F Froelicher; Eddie Atwood; Anna Tseitlin; Barry Franklin; Lars Osterberg; Dat Do; Jonathan Myers
Comparison of treadmill scores with physician estimates of diagnosis and prognosis in patients with coronary artery disease.
American heart journal 2002;143(4):650-8.
2002: Jonathan Myers; Manish Prakash; Victor F Froelicher; Dat Do; Sara Partington; J Edwin Atwood
Exercise capacity and mortality among men referred for exercise testing.
The New England journal of medicine 2002;346(11):793-801.
2002: William F Fearon; Andre J Gauri; Jonathan Myers; Vinod Raxwal; J Edwin Atwood; Victor F Froelicher
A comparison of treadmill scores to diagnose coronary artery disease.
Clinical cardiology 2002;25(3):117-22.
2002: Rachel R Marcus; Damayanthi Kalisetti; Vinod Raxwal; B Jenny Kiratli; Jonathan Myers; Inder Perkash; Victor F Froelicher
Early repolarization in patients with spinal cord injury: prevalence and clinical significance.
The journal of spinal cord medicine 2002;25(1):33-8; discussion 39.
2001: K Shetler; Rachel Marcus; Victor F Froelicher; S Vora; Damayanthi Kalisetti; Manish Prakash; Dat Do; Jonathan Myers
Heart rate recovery: validation and methodologic issues.
Journal of the American College of Cardiology 2001;38(7):1980-7.
2001: Jonathan Myers; D Bader; Rupa Madhavan; V Froelicher
Validation of a specific activity questionnaire to estimate exercise tolerance in patients referred for exercise testing.
American heart journal 2001;142(6):1041-6.
2001: Manish Prakash; Jonathan Myers; Victor F Froelicher; Rachel Marcus; Dat Do; Damayanthi Kalisetti; J Edwin Atwood
Clinical and exercise test predictors of all-cause mortality: results from > 6,000 consecutive referred male patients.
Chest 2001;120(3):1003-13.
2001: Jonathan Myers; Rupa Madhavan
Exercise testing with gas exchange analysis.
Cardiology clinics 2001;19(3):433-45.
2001: Manish Prakash; Jonathan Myers; Victor F Froelicher; Rachel Marcus; Dat Do; Damayanthi Kalisetti; Jeffrey Froning; J Edwin Atwood
Diagnostic exercise tests on 4000 consecutive men.
American heart journal 2001;142(1):127-35.
2001: Vinod Raxwal; K Shetler; Anthony P Morise; Dat Do; Jonathan Myers; J Edwin Atwood; Victor F Froelicher
Simple treadmill score to diagnose coronary disease.
Chest 2001;119(6):1933-40.
2000: Jonathan Myers; Lars Gullestad; Randall H Vagelos; Dat Do; Daniel Bellin; Heather Ross; Michael B Fowler
Cardiopulmonary exercise testing and prognosis in severe heart failure: 14 mL/kg/min revisited.
American heart journal 2000;139(1 Pt 1):78-84.
1999: J E Atwood; Jonathan Myers; Susan Quaglietti; J Grumet; R Gianrossi; T Umman
Effect of betaxolol on the hemodynamic, gas exchange, and cardiac output response to exercise in chronic atrial fibrillation.
Chest 1999;115(4):1175-80.
1998: Dat Do; Rachel Marcus; Victor F Froelicher; A Janosi; J West; J Edwin Atwood; Jonathan Myers; Robert J Chilton; Jeffrey Froning
Predicting severe angiographic coronary artery disease using computerization of clinical and exercise test data.
Chest 1998;114(5):1437-45.
1998: J Edwin Atwood; Dat Do; Victor F Froelicher; Robert J Chilton; C Dennis; Jeffrey Froning; A Janosi; D Mortara; Jonathan Myers
Can computerization of the exercise test replace the cardiologist?
American heart journal 1998;136(3):543-52.
1998: Jonathan Myers; Lars Gullestad; Randall H Vagelos; Dat Do; Daniel Bellin; Heather Ross; Michael B Fowler
Clinical, hemodynamic, and cardiopulmonary exercise test determinants of survival in patients referred for evaluation of heart failure.
Annals of internal medicine 1998;129(4):286-93.
1998: Victor F Froelicher; K G Lehmann; R Thomas; S Goldman; D Morrison; Robert Edson; Philip W Lavori; Jonathan Myers; C Dennis; R Shabetai; Dat Do; Jeffrey Froning
The electrocardiographic exercise test in a population with reduced workup bias: diagnostic performance, computerized interpretation, and multivariable prediction. Veterans Affairs Cooperative Study in Health Services #016 (QUEXTA) Study Group. Quantitative Exercise Testing and Angiography.
Annals of internal medicine 1998;128(12 Pt 1):965-74.
1998: Lars Gullestad; Jonathan Myers; Heather Ross; P Rickenbacher; SD Slauson; Daniel Bellin; Dat Do; Randall H Vagelos; Michael Fowler
Serial exercise testing and prognosis in selected patients considered for cardiac transplantation.
American heart journal 1998;135(2 Pt 1):221-9.
1997: Jonathan Myers; Euan Ashley
Dangerous curves. A perspective on exercise, lactate, and the anaerobic threshold.
Chest 1997;111(3):787-95.
1991: M Shimizu; Jonathan Myers; N Buchanan; D Walsh; M Kraemer; P McAuley; V F Froelicher
The ventilatory threshold: method, protocol, and evaluator agreement.
American heart journal 1991;122(2):509-16.
1990: Jonathan Myers; V F Froelicher
Optimizing the exercise test for pharmacological investigations.
Circulation 1990;82(5):1839-46.
1990: Jonathan Myers; J Edwin Atwood; S Forbes; M Sullivan; S Sandhu; D Walsh; Victor F Froelicher
Effect of fructose 1,6-diphosphate infusion on the hormonal response to exercise.
Medicine and science in sports and exercise 1990;22(1):102-5.
1990: J Edwin Atwood; Jonathan Myers; A Colombo; W Pewen; M Grover-McKay; K Lehmann; S Sandhu; M Sullivan; P Hall; Victor F Froelicher
The effect of complete and incomplete revascularization on exercise variables in patients undergoing coronary angioplasty.
Clinical cardiology 1990;13(2):89-93.
1989: J Edwin Atwood; Jonathan Myers; M Sullivan; S Forbes; S Sandhu; P Callaham; Victor F Froelicher
The effect of cardioversion on maximal exercise capacity in patients with chronic atrial fibrillation.
American heart journal 1989;118(5 Pt 1):913-8.
1989: M Sullivan; J Edwin Atwood; Jonathan Myers; J Feuer; P Hall; B Kellerman; S Forbes; Victor F Froelicher
Increased exercise capacity after digoxin administration in patients with heart failure.
Journal of the American College of Cardiology 1989;13(5):1138-43.
1989: J Edwin Atwood; Jonathan Myers; S Sandhu; B Lachterman; R Friis; A Oshita; S Forbes; D Walsh; Victor F Froelicher
Optimal sampling interval to estimate heart rate at rest and during exercise in atrial fibrillation.
The American journal of cardiology 1989;63(1):45-8.
1988: J Edwin Atwood; Jonathan Myers; S Forbes; P Hall; R Friis; G Marcondes; D Mortara; V F Froelicher
High-frequency electrocardiography: an evaluation of lead placement and measurements.
American heart journal 1988;116(3):733-9.
1988: J Edwin Atwood; S Kawanishi; Jonathan Myers; V F Froelicher
Exercise testing in patients with aortic stenosis.
Chest 1988;93(5):1083-7.
1988: J Edwin Atwood; Jonathan Myers; M Sullivan; S Forbes; R Friis; W Pewen; P Callaham; P Hall; Victor F Froelicher
Maximal exercise testing and gas exchange in patients with chronic atrial fibrillation.
Journal of the American College of Cardiology 1988;11(3):508-13.
1987: J Edwin Atwood; M Sullivan; S Forbes; Jonathan Myers; W Pewen; H G Olson; V F Froelicher
Effect of beta-adrenergic blockade on exercise performance in patients with chronic atrial fibrillation.
Journal of the American College of Cardiology 1987;10(2):314-20.
1987: Jonathan Myers; J Edwin Atwood; M Sullivan; S Forbes; R Friis; W Pewen; Victor F Froelicher
Perceived exertion and gas exchange after calcium and beta-blockade in atrial fibrillation.
Journal of applied physiology (Bethesda, Md. : 1985) 1987;63(1):97-104.
1987: Jonathan Myers; S Ahnve; Victor F Froelicher; M Sullivan; R Friis
Influence of exercise training on spatial R-wave amplitude in patients with coronary artery disease.
Journal of applied physiology (Bethesda, Md. : 1985) 1987;62(3):1231-5.
1986: S Ahnve; M Sullivan; Jonathan Myers; Victor F Froelicher
Computer analysis of exercise-induced changes in QRS duration in patients with angina pectoris and in normal subjects.
American heart journal 1986;111(5):903-8.
1985: Jonathan Myers; S Ahnve; Victor F Froelicher; M Sullivan
Spatial R wave amplitude changes during exercise: relation with left ventricular ischemia and function.
Journal of the American College of Cardiology 1985;6(3):603-8.
1984: Jonathan Myers; S Ahnve; Victor F Froelicher; M Livingston; D Jensen; I Abramson; M Sullivan; D Mortara
A randomized trail of the effects of 1 year of exercise training on computer-measured ST segment displacement in patients with coronary artery disease.
Journal of the American College of Cardiology 1984;4(6):1094-102.