1. Department of Epidemiology and Biostatistics, University of California, San Francisco
2. San Francisco VA Health Care System, California
3. Department of Psychiatry, Weill Institute for Neurosciences, University of California, San Francisco
4. Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medicine, Baltimore, Maryland
5. Department of Epidemiology
6. Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
7. Department of Neurology, University of California, San Francisco