1. Department of Medicine, Internal Medicine Residency Program, Boston Medical Center, Boston, Massachusetts, USA.
2. Department of Medicine, Section of Infectious Diseases, Boston Medical Center, Boston, Massachusetts, USA.
3. Department of Medicine, Section of General Internal Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, Massachusetts, USA.
4. Grayken Center for Addiction, Boston Medical Center, Boston, Massachusetts, USA.