| Affiliation: | 1. Division of Geriatrics, University of California at San Francisco, , San Francisco, California;2. Health Services Research Enhancement Award Program, San Francisco Veterans Affairs Medical Center, , San Francisco, California;3. Department of Epidemiology and Biostatistics, University of California at San Francisco, , San Francisco, California;4. Center on Aging, University of Connecticut, , Farmington, Connecticut;5. Division of Geriatric Medicine and Gerontology, University of Pittsburgh, , Pittsburgh, Pennsylvania;6. Department of Medicine, University of Alabama at Birmingham, , Birmingham, Alabama |
