1. Center for Musculoskeletal Health and Department of Internal Medicine; University of California; Davis, Sacramento California
2. California Pacific Medical Center Research Institute; San Francisco California
3. Department of Psychiatry, School of Medicine; University of California; San Francisco, San Francisco California
4. Department of Psychiatry; University of California; San Diego, La Jolla California
5. Department of Medicine; University of California; San Diego, La Jolla California
6. Brigham and Women's Hospital and Beth Israel Deaconess Medical Center, Harvard Medical School; Boston Massachusetts
7. Department of Epidemiology, Graduate School of Public Health; University of Pittsburgh; Pittsburgh Pennsylvania
8. Department of Medicine; University of Minnesota; Minneapolis Minnesota
9. Division of EpiCH; University of Minnesota; Minneapolis Minnesota
10. Department of Medicine; Minneapolis Veterans Affairs Health Care System; Minneapolis Minnesota
11. Health Economics and Outcomes Research; Optum Life Sciences, Inc.; Eden Prairie Minnesota
12. Department of Family and Preventive Medicine; University of California; San Diego, La Jolla California
13. Center for Health Research Northwest, Kaiser Permanente; Portland Oregon