Affiliation: | 1. Division of Geriatrics, University of California at San Francisco, San Francisco, California;2. 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. Jewish Home of San Francisco, San Francisco, California;5. Department of Physiological Nursing, School of Nursing, University of California at San Francisco, San Francisco, California |