1. Department of Medicine, University of Washington, Seattle, WA, USA
2. Department of Epidemiology, University of Washington, Seattle, WA, USA
3. Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
4. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, Baltimore, MD, USA
5. Department of Epidemiology, Johns Hopkins University, Baltimore, MD, USA
6. Fenway Institute and Department of Medicine, Harvard Medical School, Boston, MA, USA
7. Department of Social Work, University of Alabama at Birmingham, Birmingham, AL, USA
8. Department of Psychology, University of Miami, Miami FL, USA
9. Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
10. Department of Medicine, University of California at San Diego, San Diego, CA, USA
11. Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
12. Department of Epidemiology, University of Manitoba, Manitoba, MB, Canada