FDA notifications.  Potential serious effect of combination saquinavir-ritonavir.
D017277:Drug Approval / Q000331:legislation & jurisprudence; D004359:Drug Therapy, Combination; D015658:HIV Infections / Q000188:drug therapy*; D017320:HIV Protease Inhibitors / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D006801:Humans; D019438:Ritonavir / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D019258:Saquinavir / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D014481:United States; D014486:United States Food and Drug Administration
D017320:HIV Protease Inhibitors; D019258:Saquinavir; D019438:Ritonavir