Antiretroviral Therapy, Highly ActiveAnti-HIV AgentsHIV InfectionsAnti-Retroviral AgentsCD4 Lymphocyte CountViral LoadDrug Therapy, CombinationHIV-1BotswanaAIDS Dementia ComplexAcquired Immunodeficiency SyndromeHIV Protease InhibitorsHIVReverse Transcriptase InhibitorsIndinavirZidovudineAIDS-Related Opportunistic InfectionsCohort StudiesRNA, ViralBenzoxazinesRitonavirInfectious Disease Transmission, VerticalLamivudineViremiaDrug Resistance, ViralMedication AdherenceImmune Reconstitution Inflammatory SyndromeLopinavirStavudineNevirapineTreatment OutcomePregnancy Complications, InfectiousTreatment FailureOrganophosphonatesUgandaCD4-Positive T-LymphocytesHIV SeropositivityDidanosinePatient ComplianceLymphoma, AIDS-RelatedRisk FactorsTime FactorsAdenineProspective StudiesDrug Administration ScheduleHIV Reverse TranscriptaseIncidenceFollow-Up StudiesRetrospective StudiesPneumonia, PneumocystisAsiaDisease ProgressionPoisson DistributionSouth AfricaPyrimidinonesDrug TherapyCross-Sectional StudiesNelfinavirVirus ReplicationProportional Hazards ModelsUnited StatesPrevalenceHIV-Associated Lipodystrophy SyndromePregnancyLongitudinal StudiesAfrica South of the SaharaMultivariate AnalysisSurvival AnalysisNeuropsychological TestsLost to Follow-UpDrug Resistance, Multiple, ViralDrug MonitoringMalawiCase-Control StudiesAntiviral AgentsCoinfectionDirectly Observed TherapyDrug CombinationsCD8-Positive T-LymphocytesZambiaDideoxynucleosidesCote d'IvoireCytomegalovirus RetinitisAfrica, SouthernGenotypeAntitubercular AgentsDNA, ViralTuberculosisInfant, NewbornHIV ProteaseLipodystrophyOxazinesHIV Wasting SyndromeConfidence IntervalsDeveloping CountriesZimbabwePlasmaAge FactorsAIDS-Associated NephropathyCD4-CD8 Ratio