1. Grayken Center for Addiction Medicine, Boston Medical Center, Boston, MA, USA
2. General Internal Medicine, Boston Medical Center, Boston, MA, USA
3. Clinical Addiction Research and Education Unit, Section of General Internal Medicine, Boston Medical Center, Boston, MA, USA
4. Boston University School of Medicine, Boston, MA, USA
5. Department of Family Medicine, Boston Medical Center, Boston, MA, USA
6. Department of Psychiatry, Boston Medical Center, Boston, MA, USA