StavudineAnti-HIV AgentsReverse Transcriptase InhibitorsZidovudineDidanosineLamivudineAcidosis, LacticHIV-Associated Lipodystrophy SyndromeHIV InfectionsNevirapineLipodystrophyAntiretroviral Therapy, Highly ActiveOrganophosphonatesNelfinavirBenzoxazinesHIV-1Drug Resistance, Multiple, ViralDrug Therapy, CombinationAdenineCD4 Lymphocyte CountIndinavirOxazinesViral LoadHIV Reverse TranscriptaseDrug Resistance, ViralDideoxynucleosidesAnti-Retroviral AgentsLopinavirDideoxynucleotidesPyrimidinonesDrugs, GenericHIVZalcitabineMacaca nemestrinaRitonavirHIV Protease Inhibitors