1. Department of Medicine, Division of Geriatric Medicine, University of Washington School of Medicine, WA, USA
2. Northwest Network VISN-20 Mental Illness Research, Education, and Clinical Center (MIRECC), VA Puget Sound Health Care System, Seattle, WA, USA
3. Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, WA, USA
4. Department of Neurology, University of Washington School of Medicine, WA, USA
5. Northwest Lipid Metabolism and Diabetes Research Laboratories, University of Washington School of Medicine, WA, USA
6. Department of Pathology, Division of Neuropathology, University of Washington School of Medicine, WA, USA
7. Department of Pathology, University of Pennsylvania, Philadelphia, PA, USA
8. Elan Pharmaceuticals, South San Francisco, CA, USA
9. Department of Neurology, University of California, San Diego, CA, USA
10. Geriatric Research, Education, and Clinical Center (GRECC), VA Puget Sound Health Care System, Seattle, WA, USA
11. Geriatrics and Extended Care, VA Puget Sound Health Care System, Seattle, WA, USA