Yates ME, Stellato RK, Johannes CB, Avis NE. The importance of AIDS-related knowledge for mid-life and older women. AIDS Educ Prev. 1999 Jun;11(3):224-31.
Allan JS, Kanda P, Kennedy RC, Cobb EK, Anthony MS, Eichberg JW. Isolation and characterization of simian immunodeficiency virus from two subspecies of African green monkeys. Aids Res Hum Retrovir. 1990 Mar;6(3):275-85.