"The Gerontological Society of America (GSA) is a multidisciplinary organization devoted to research and education in all aspects of gerontology: medical, biological, psychological and social. As of 2006 GSA had about 5,000 members."@en . . "The Gerontological Society of America"@en . "The Gerontological Society of America (GSA) is a multidisciplinary organization devoted to research and education in all aspects of gerontology: medical, biological, psychological and social. As of 2006 GSA had about 5,000 members."@en .