1. Division of Research, Kaiser Permanente Northern California, Oakland
2. Weill Institute for Neurosciences, Department of Psychiatry and Behavioral Sciences, University of California, San Francisco
3. Department of Population Medicine, Harvard Medical School, Boston, Massachusetts
4. Harvard Pilgrim Health Care Institute, Boston, Massachusetts
5. Department of Infectious Diseases, Kaiser Permanente Oakland Medical Center, Oakland, California
6. Department of Adult and Family Medicine, Kaiser Permanente San Francisco Medical Center, San Francisco, California