3TC expanded access program: new requirement for CD4 less than 100.
D018791:CD4 Lymphocyte Count; D015658:HIV Infections / Q000188:drug therapy*; D006801:Humans; D019259:Lamivudine; D016047:Zalcitabine / Q000031:analogs & derivatives / Q000600:supply & distribution / Q000627:therapeutic use*
D019259:Lamivudine; D016047:Zalcitabine