IndinavirZidovudineHIV Protease InhibitorsAnti-HIV AgentsStavudineDidanosineLamivudineRitonavirSaquinavirHIV InfectionsReverse Transcriptase InhibitorsNelfinavirHIV-1Drug Therapy, CombinationOxazinesNevirapineZalcitabineBenzoxazinesDideoxynucleosidesCD4 Lymphocyte CountDrug InteractionsAcquired Immunodeficiency SyndromeInfectious Disease Transmission, VerticalDideoxynucleotidesHIV Reverse TranscriptasePyrimidinonesLopinavirAIDS-Related ComplexHIV ProteaseArea Under CurveViral LoadDrug Resistance, ViralRNA, ViralPregnancy Complications, InfectiousAntiretroviral Therapy, Highly ActiveCarbamatesPyuriaCytochrome P-450 CYP3AHIV Core Protein p24Drug Resistance, MicrobialSophoraAnti-Retroviral AgentsHIVThymine NucleotidesDouble-Blind MethodHalf-LifeChromatography, High Pressure LiquidTreatment Failure