1. Birmingham/Atlanta Geriatric Research, Education and Clinical Center, Department of Veterans Affairs Medical Center, University of Alabama at Birmingham, Birmingham, Alabama
2. Division of Gerontology, Geriatrics and Palliative Care, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
3. Division of Woman's Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, Alabama
4. Social and Scientific Systems, Inc., Silver Spring, Maryland
5. National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland