1. University of California San Francisco, Memory and Aging Center, Weill Institute for the Neurosciences, San Francisco, CA, USA
2. University of California San Francisco, Weill Institute for the Neurosciences, San Francisco, CA, USA
3. San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
4. Department of Neurology, University of Minnesota, Minneapolis, MN, USA
5. Department of Epidemiology, University of California San Francisco, San Francisco, CA, USA
6. Department of Psychiatry, University of California San Francisco, San Francisco, CA, USA
7. Neurological Institute of Athens, Athens, Greece
8. Stanford Sleep Medicine Center, Redwood City, CA, USA