1. Aging America: Trends and Projections;U.S. Senate Committee, U.S. Senate Special Committee on Aging,1987
2. National Center for Health Statistics: Health: United States, 1995. U.S. Department of Health and Human Services, Public Health Service. DHHS Pub. No (PHS) 96-1232, Hyattsville, MD, May 1996, p 263
3. Screening for depression in hospitalized geriatric medical patients;Kitchell;J Am Geriatr Soc,1982
4. Depression in elderly hospitalized patients with medical illness;Koenig;Arch Intern Med,1988
5. Major depressive disorders in hospitalized medically ill men: comparison of younger and older veterans;Koenig;J Am Geriatr Soc,1991