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HIV Infections
HIV-1
Viral Drug Resistance
Genotype
Anti-HIV Agents
RNA, Viral
HIV Protease Inhibitors
Reverse Transcriptase Inhibitors
Anti-Retroviral Agents
Lopinavir
Dideoxynucleosides
Highly Active Antiretroviral Therapy
CD4 Lymphocyte Count
Viral Load
Cohort Studies
Retrospective Studies
Time Factors
Prevalence
Treatment Outcome
Italy
Co-Publications
19
18
16
10
3
2
1
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