DidanosineDideoxynucleosidesAnti-HIV AgentsZidovudineReverse Transcriptase InhibitorsStavudineLamivudineHIV InfectionsOrganophosphonatesBenzoxazinesOxazinesAdenineDrug Therapy, CombinationHIV-1Drug HypersensitivityNevirapineAntiretroviral Therapy, Highly ActiveHIV Reverse TranscriptaseCD4 Lymphocyte CountZalcitabineViral LoadHLA-B AntigensIndinavirClostridium botulinum type CDrug InteractionsRNA, ViralHIV Protease InhibitorsNelfinavirAcquired Immunodeficiency SyndromeDrug Resistance, Multiple, ViralDelavirdineTreatment FailureAcidosis, LacticRitonavirHIV-Associated Lipodystrophy SyndromeAIDS-Related ComplexArea Under CurveAnti-Retroviral AgentsHydroxyureaHIV Core Protein p24Half-LifeNucleic Acid Synthesis InhibitorsHIVSaquinavirGenes, polTreatment OutcomeDouble-Blind MethodStandard of CareChemistry, PharmaceuticalDeoxyguanine NucleotidesPharmacogeneticsAntiviral Agents