StavudineAnti-HIV AgentsReverse Transcriptase InhibitorsZidovudineDidanosineLamivudineAcidosis, LacticHIV-Associated Lipodystrophy SyndromeHIV InfectionsNevirapineLipodystrophyAntiretroviral Therapy, Highly ActiveOrganophosphonatesNelfinavirBenzoxazinesDrug Therapy, CombinationHIV-1Drug Resistance, Multiple, ViralAdenineCD4 Lymphocyte CountIndinavirOxazinesViral LoadDrug Resistance, ViralHIV Reverse TranscriptaseDideoxynucleosidesAnti-Retroviral AgentsLopinavirPyrimidinonesDideoxynucleotidesDrugs, GenericHIVRitonavirZalcitabineMacaca nemestrinaHIV Protease Inhibitors