[1] Univ Calif San Francisco, Dept Physiol Nursing, San Francisco, CA USA
[2] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA USA
[3] Univ Calif San Francisco, Dept Psychiat, San Francisco, CA USA
[4] Univ Calif San Francisco, Global Brain Hlth Inst, San Francisco, CA USA
[5] Univ Calif San Francisco, Philip R Lee Inst Hlth Policy Studies, San Francisco, CA USA
[6] Northern Calif Inst Res & Educ, San Francisco, CA USA
[7] Univ Calif San Francisco, Div Geriatr, San Francisco, CA USA
[8] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA USA
[9] Univ Calif San Francisco, Inst Hlth & Aging, San Francisco, CA USA
[10] Univ Calif San Francisco, Dept Neurol, San Francisco, CA USA
[11] Univ Calif San Francisco, Dept Physiol Nursing, 2 Koret Way Box 605N, San Francisco, CA 94121 USA