Antiretroviral Therapy, Highly ActiveHIV InfectionsAnti-HIV AgentsCD4 Lymphocyte CountViral LoadHIV-1Acquired Immunodeficiency SyndromeAIDS-Related Opportunistic InfectionsHIVLymphoma, AIDS-RelatedInfectious Disease Transmission, VerticalReverse Transcriptase InhibitorsCohort StudiesBotswanaCD4-Positive T-LymphocytesHIV SeropositivityRNA, ViralCytomegalovirus RetinitisTreatment OutcomeStavudineImmune Reconstitution Inflammatory SyndromePatient ComplianceSouth AfricaZidovudinePregnancy Complications, InfectiousNevirapineHIV-Associated Lipodystrophy SyndromeViremiaAIDS Dementia ComplexSarcoma, KaposiProspective StudiesDrug Resistance, ViralIndinavirRetrospective StudiesLamivudineRitonavirReproductive BehaviorBenzoxazinesLopinavirLipodystrophyCoinfectionVirus LatencyRisk FactorsMedication AdherenceIncidenceTime FactorsSubstance Abuse, IntravenousUgandaCD8-Positive T-LymphocytesOxazinesDrug Therapy, CombinationLongitudinal StudiesFollow-Up StudiesDisease ProgressionCross-Sectional StudiesDrug Administration SchedulePrevalenceTreatment FailureHIV Long-Term SurvivorsNelfinavirHIV SeronegativityLymphocyte CountDirectly Observed TherapyMouth DiseasesCD4-CD8 RatioHepatitis CMultivariate AnalysisPyrimidinonesVirus ReplicationTuberculosisToxoplasmosis, CerebralProportional Hazards ModelsSurvival AnalysisAIDS-Associated NephropathyDrug Resistance, Multiple, ViralLeukoencephalopathy, Progressive MultifocalCote d'IvoireWithholding TreatmentBrazilCardiovascular Physiological ProcessesBaltimoreDidanosineAnus NeoplasmsLatin AmericaDNA, ViralSaquinavirPregnancyAntitubercular AgentsUnited StatesBritish ColumbiaTertiary HealthcareHIV Reverse TranscriptaseCameroonMozambiquePigmentation DisordersThailandMeningitis, CryptococcalOrganophosphonatesPlasmaZalcitabine