Reverse Transcriptase InhibitorsDideoxynucleosidesHIV Reverse TranscriptaseAnti-HIV AgentsBenzoxazinesDrug Resistance, ViralHIV-1ZidovudineHIV InfectionsNevirapineOrganophosphonatesHIV Protease InhibitorsDelavirdineLamivudineOxazinesAdenineDrug Resistance, Multiple, ViralRNA-Directed DNA PolymeraseStavudineAntiretroviral Therapy, Highly ActiveDidanosineRitonavirViral LoadDrug Therapy, CombinationLopinavirPyrimidinonesPyridazinesPyranocoumarinsNucleosidesAnti-Retroviral AgentsZalcitabineDideoxynucleotidesCD4 Lymphocyte CountRNA, ViralDrug HypersensitivityTreatment FailureHIVMutationHIV-Associated Lipodystrophy SyndromeDrug InteractionsVirus ReplicationIndinavirHIV ProteaseNelfinavirHLA-B AntigensRibonuclease HHIV Integrase InhibitorsTelomeraseGenotypeArea Under CurveLipodystrophyReverse Transcriptase Polymerase Chain ReactionAcquired Immunodeficiency SyndromeAntiviral AgentsMolecular Sequence DataThymine NucleotidesAcidosis, LacticReverse Transcriptionpol Gene Products, Human Immunodeficiency VirusMutation, MissenseIntegrase InhibitorsFuransHIV-2SaquinavirPyrrolidinonesPyridinesCell LineBase SequenceNitrilesDrug Resistance, MicrobialTreatment OutcomeAnilidesDeoxycytidineBenzoxazolesCarbamatesDrug CombinationsAmino Acid SubstitutionInhibitory Concentration 50Protease InhibitorsChromatography, High Pressure LiquidDeoxyguanine NucleotidesPyridonesAvian myeloblastosis virusFoscarnetDNA, ViralDrug Administration ScheduleErythrocebus patasDNA, MitochondrialSulfur CompoundsSulfonamidesTemplates, GeneticMicrobial Sensitivity TestsDrug DesignPyrimidinesLeukocytes, MononuclearDeoxyadenosinesCohort StudiesBotswanaMolecular StructureDNA Primers