1. Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Department of Medicine, Boston Medical Center, Boston, MA, USA,
2. Section of General Internal Medicine, Department of Medicine, University of Washington and Harborview Medical Center, Seatle, WA, USA,
3. Division of General Internal Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA,
4. Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA,
5. Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA,
6. Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA,
7. Department of Medicine, Boston University School of Medicine, Boston, MA, USA,
8. Biostatistics and Epidemiology Data Analytics Center, Boston University School of Public Health, Boston, MA, USA,
9. Department of Community Health Sciences, Boston University School of Public Health, Boston, MA, USA