Antiretroviral Therapy, Highly ActiveHIV InfectionsAnti-HIV AgentsAnti-Retroviral AgentsCD4 Lymphocyte CountViral LoadHIV-1Acquired Immunodeficiency SyndromeHIVAIDS-Related Opportunistic InfectionsReverse Transcriptase InhibitorsDrug Resistance, ViralHIV Protease InhibitorsRNA, ViralStavudineZidovudineSouth AfricaNevirapineMedication AdherenceBenzoxazinesHIV-Associated Lipodystrophy SyndromeInfectious Disease Transmission, VerticalCohort StudiesDrug Therapy, CombinationHIV SeropositivityImmune Reconstitution Inflammatory SyndromeRitonavirViremiaPatient ComplianceCD4-Positive T-LymphocytesLopinavirLamivudineTreatment OutcomeUgandaOrganophosphonatesTreatment FailurePregnancy Complications, InfectiousIndinavirAIDS Dementia ComplexBotswanaLymphoma, AIDS-RelatedDrug Resistance, Multiple, ViralPyrimidinonesLost to Follow-UpCytomegalovirus RetinitisDidanosineAdenineNelfinavirCoinfectionMalawiDrug Administration ScheduleProspective StudiesDirectly Observed TherapyDrug MonitoringHIV Reverse TranscriptaseTime FactorsRetrospective StudiesDideoxynucleosidesOxazinesRisk FactorsLipodystrophyAfrica South of the SaharaCote d'IvoireAfrica, SouthernZambiaHIV Wasting SyndromeCross-Sectional StudiesDisease ProgressionFollow-Up StudiesTuberculosisHIV ProteaseAntitubercular AgentsVirus ReplicationPrevalenceCD4-CD8 RatioAIDS-Associated NephropathyPlasmaIncidenceCD8-Positive T-LymphocytesSarcoma, KaposiDeveloping CountriesHIV Long-Term SurvivorsLongitudinal StudiesSaquinavirAntiviral AgentsZimbabwePregnancyLymphocyte CountVirus LatencyHIV SeronegativityAcidosis, LacticCameroonTreatment RefusalThailandWithholding TreatmentSubstance Abuse, IntravenousDNA, ViralHaitiKenyaHepatitis C