StavudineZidovudineAnti-HIV AgentsDidanosineReverse Transcriptase InhibitorsLamivudineHIV InfectionsNevirapineHIV-1ZalcitabineAcidosis, LacticHIV-Associated Lipodystrophy SyndromeDideoxynucleosidesDrug Therapy, CombinationDideoxynucleotidesHIV Reverse TranscriptaseAntiretroviral Therapy, Highly ActiveIndinavirCD4 Lymphocyte CountBenzoxazinesOrganophosphonatesLipodystrophyAcquired Immunodeficiency SyndromeNelfinavirDrug Resistance, ViralDrug Resistance, Multiple, ViralViral LoadInfectious Disease Transmission, VerticalOxazinesAdenineAIDS-Related ComplexAnti-Retroviral AgentsHIVLopinavirHIV Protease InhibitorsThymine NucleotidesPyrimidinonesRNA, ViralPregnancy Complications, InfectiousRitonavirDrug InteractionsDrugs, GenericSaquinavirMacaca nemestrinaAntiviral AgentsHIV Core Protein p24Drug Resistance, MicrobialTreatment FailureNucleosidesHIV SeropositivityDNA, MitochondrialMalawiPlasmaThailandDrug SubstitutionPregnancy