1. University of California, Los Angeles Department of Epidemiology, UCLA Fielding School of Public Health, , Los Angeles, CA 90095, United States
2. University of Montana School of Public and Community Health Sciences, , Missoula, MT 59812, United States
3. University of California, Davis Department of Public Health Sciences, School of Medicine, , Davis, CA 95616, United States
4. Kaiser Permanente Division of Research , Pleasanton, CA 94588, United States
5. University of California, San Francisco Department of Epidemiology and Biostatistics, School of Medicine, , San Francisco, CA 94158, United States
6. Boston University Department of Epidemiology, Boston University School of Public Health, , Boston, MA 02118, United States
7. University of California, San Francisco Department of General Internal Medicine, School of Medicine, , San Francisco, CA 94143, United States
8. University of California UCSF Philip R. Lee Institute for Health Policy Studies, , San Francisco, San Francisco, CA 94158, United States
9. Rush University Medical Center Rush Alzheimer’s Disease Center, , Chicago, IL 60612, United States
10. University of California, Davis Alzheimer’s Disease Research Center, School of Medicine, , Sacramento, CA 95816, United States