Wion RK, Hill NL, Mogle J, Bhargava S, Berish D, Kolanowski A. Scoring of leisure activities for older adults according to cognitive, physical, and social components. Res Gerontol Nurs. 2020 Jan 1;13(1):13-20. doi: 10.3928/19404921-20191022-01
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.