| Institution: | 1. Division of Geriatrics, University of California at San Francisco, San Francisco, California;2. San Francisco Veterans Affairs Medical Center, San Francisco, California;3. Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland;4. Department of Biostatistics, School of Public Health, Boston University, Boston, Massachusetts;5. Section of Geriatrics, School of Medicine, Boston University, Boston, Massachusetts;6. Department of Epidemiology, School of Public Health, Boston University, Boston, Massachusetts |
