| Affiliation: | 1. Department of Internal Medicine, Wake Forest School of Medicine, , Winston Salem, North Carolina;2. Department of Internal Medicine, University of Alabama at Birmingham, , Birmingham, Alabama;3. Department of Biostatistics, Wake Forest School of Medicine, , Winston Salem, North Carolina;4. Department of Psychiatry, University of California at San Francisco, , San Francisco, California;5. Department of Neurology, University of California at San Francisco, , San Francisco, California;6. Department of Epidemiology and Biostatistics, University of California at San Francisco, , San Francisco, California;7. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, , Pittsburgh, Pennsylvania;8. Intramural Research Program, National Institute on Aging, , Bethesda, Maryland;9. Clinical Research Branch, National Institute on Aging, , Baltimore, Maryland |
