Antiretroviral Therapy, Highly ActiveHIV InfectionsAnti-HIV AgentsAnti-Retroviral AgentsCD4 Lymphocyte CountViral LoadHIV-1HIVAcquired Immunodeficiency SyndromeReverse Transcriptase InhibitorsDrug Resistance, ViralHIV Protease InhibitorsDrug Therapy, CombinationAIDS-Related Opportunistic InfectionsMedication AdherenceSouth AfricaZidovudineRNA, ViralStavudineNevirapineDrug TherapyBenzoxazinesCohort StudiesInfectious Disease Transmission, VerticalPatient ComplianceHIV-Associated Lipodystrophy SyndromeTreatment OutcomeRitonavirHIV SeropositivityImmune Reconstitution Inflammatory SyndromeUgandaLamivudineViremiaLopinavirOrganophosphonatesCD4-Positive T-LymphocytesTreatment FailurePregnancy Complications, InfectiousIndinavirLost to Follow-UpDrug Resistance, Multiple, ViralAIDS Dementia ComplexDrug MonitoringBotswanaMalawiAdeninePyrimidinonesDidanosineDrug Administration ScheduleProspective StudiesCoinfectionLymphoma, AIDS-RelatedNelfinavirHIV Reverse TranscriptaseDirectly Observed TherapyTime FactorsRetrospective StudiesRisk FactorsAfrica South of the SaharaZambiaDideoxynucleosidesFollow-Up StudiesCote d'IvoireCytomegalovirus RetinitisAfrica, SouthernCross-Sectional StudiesAntitubercular AgentsTuberculosisDisease ProgressionHIV ProteaseLipodystrophyOxazinesPrevalenceHIV Wasting SyndromeVirus ReplicationDeveloping CountriesZimbabwePlasmaIncidenceAntiviral AgentsLongitudinal StudiesAIDS-Associated NephropathyCD4-CD8 RatioPregnancySaquinavirTreatment RefusalHIV Long-Term SurvivorsCD8-Positive T-LymphocytesHaitiCameroonDrug Interactionspol Gene Products, Human Immunodeficiency VirusGenotypeMultivariate AnalysisAcidosis, LacticThailandWithholding TreatmentSarcoma, KaposiKenyaDrug Costs