Treatment with lamivudine, zidovudine, or both in HIV-positive patients with 200 to 500 CD4+ cells per cubic millimeter. - Eron, JJ; Benoit, SL; Jemsek, J; MacArthur, RD; Santana, J; Quinn, JB; Kuritzkes, DR; Fallon, MA; Rubin, M (New Engl J Med, 1995)