1. From the Department of Pathology, State University of New York, Health Science Center, Syracuse, New York
2. Divisions of Urology and Geriatric Research, Education and Clinical Center, Brockton/West Roxbury
3. Veterans Administration Medical Center, West Roxbury
4. Hebrew Rehabilitation Center for Aged and Division of Gerontology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts