Antiretroviral Therapy, Highly ActiveHIV InfectionsAnti-HIV AgentsAnti-Retroviral AgentsCD4 Lymphocyte CountViral LoadHIV-1Acquired Immunodeficiency SyndromeHIV SeropositivityHIV Protease InhibitorsDrug Resistance, ViralReverse Transcriptase InhibitorsHIVAIDS-Related Opportunistic InfectionsSouth AfricaRNA, ViralMedication AdherenceZidovudineStavudineNevirapineBenzoxazinesCohort StudiesInfectious Disease Transmission, VerticalDrug Therapy, CombinationHIV-Associated Lipodystrophy SyndromeUgandaRitonavirPatient ComplianceImmune Reconstitution Inflammatory SyndromeViremiaCD4-Positive T-LymphocytesOrganophosphonatesLamivudineLopinavirTreatment OutcomeTreatment FailureAIDS Dementia ComplexIndinavirPregnancy Complications, InfectiousLost to Follow-UpDrug Resistance, Multiple, ViralMalawiCoinfectionHIV Reverse TranscriptaseAdenineBotswanaPyrimidinonesDidanosineHIV SeronegativityLymphoma, AIDS-RelatedNelfinavirDrug MonitoringDirectly Observed TherapyAfrica South of the SaharaZambiaProspective StudiesDrug Administration ScheduleRisk FactorsHIV ProteaseCote d'IvoireDideoxynucleosidesTime FactorsCross-Sectional StudiesRetrospective StudiesCytomegalovirus RetinitisPrevalenceZimbabweHIV Wasting SyndromeTuberculosisAfrica, SouthernLipodystrophyVirus ReplicationHIV Long-Term SurvivorsDeveloping CountriesOxazinesAntitubercular AgentsDisease ProgressionFollow-Up StudiesPlasmaSubstance Abuse, IntravenousIncidencePregnancyAIDS-Associated NephropathyCD4-CD8 RatioSaquinavirLongitudinal StudiesCD8-Positive T-LymphocytesHIV SeroprevalenceCameroonHaitiKenyaAntiviral AgentsThailandpol Gene Products, Human Immunodeficiency VirusTreatment RefusalLesothoHomosexuality, MaleSarcoma, KaposiRwandaHepatitis C