1. Department of Medicine, Division of General Internal Medicine and Division of Hospital Medicine University of Colorado Aurora Colorado USA
2. Department of Internal Medicine Dell Medical School at The University of Texas at Austin Austin Texas USA
3. Department of Medicine, Division of Hospital Medicine University of California San Francisco and San Francisco General Hospital San Francisco California USA
4. Department of Medicine, Section of Addiction Medicine and Division of Hospital Medicine Oregon Health & Science University Portland Oregon USA
5. Department of Medicine, Boston Medical Center, Section of General Internal Medicine, Clinical Addiction Research and Education (CARE) Unit Boston University School of Medicine Boston Massachusetts USA
6. Department of Medicine Yale School of Medicine New Haven Connecticut USA
7. Department of Medicine Harvard Medical School Boston Massachusetts USA
8. Department of Medicine Massachusetts General Hospital Charlestown Massachusetts USA
9. Department of Medicine VA Boston Healthcare System West Roxbury Massachusetts USA
10. Department of Internal Medicine, Division of Hospital Medicine University of New Mexico School of Medicine Albuquerque New Mexico USA
11. San Francisco VA Medical Center San Francisco California USA
12. Department of Psychiatry and Behavioral Sciences University of California San Francisco San Francisco California USA
13. Department of Internal Medicine at Highland Hospital Alameda Health System Oakland California USA
14. Albert Einstein College of Medicine and Montefiore Medical Center Bronx New York USA
15. Division of Addiction Medicine Johns Hopkins School of Medicine Baltimore Maryland USA
16. Department of Epidemiology Johns Hopkins School of Public Health Baltimore Maryland USA
17. Family Community Medicine University of California, San Francisco San Francisco California USA
18. Department of Medicine Beth Israel Deaconess Medical Center Boston Massachusetts USA