1. Department of Medicine, University of Washington, Seattle, Washington.
2. Department of Medicine, University of California at San Francisco, San Francisco, California.
3. Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
4. Department of Psychiatry, University of Alabama at Birmingham, Birmingham, Alabama.
5. Department of Medicine, Fenway Institute, Harvard Medical School, Boston, Massachusetts.
6. Division of Psychiatry, Fenway Institute, Harvard Medical School, Boston, Massachusetts.
7. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, Baltimore, Maryland.
8. Department of Medicine, Johns Hopkins University, Baltimore, Maryland.
9. Department of Medicine, University of California San Diego, San Diego, California.
10. Department of Medicine, University of North Carolina, Chapel Hill, North Carolina.
11. Department of Epidemiology, University of Washington, Seattle, Washington.