NelfinavirHIV Protease InhibitorsSaquinavirOxazinesRitonavirIndinavirBenzoxazinesStavudineAnti-HIV AgentsHIV InfectionsPyrimidinonesReverse Transcriptase InhibitorsLopinavirDrug InteractionsHIV ProteaseHIV-1CarbamatesDibenzocycloheptenesAspartic Acid ProteasesArea Under CurveLamivudineDrug Therapy, CombinationDrug Resistance, ViralCytochrome P-450 CYP3A