1. Division of General Internal Medicine, Department of Medicine, Massachusetts General Hospital, Boston
2. Department of Medicine, Harvard Medical School, Boston, Massachusetts
3. Clinical Addiction Research and Education Unit, Boston Medical Center, Boston, Massachusetts
4. Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
5. Integrated Programs, OptumLabs Inc, Cambridge, Massachusetts
6. Department of Research, OptumLabs, Minnetonka, Minnesota
7. Department of Research, OptumLabs, Cambridge, Massachusetts
8. Department of Research, Optum Behavioral Health, Cambridge, Massachusetts
9. Department of Medicare and Retirement, United Healthcare, Minnetonka, Minnesota