1 Division of General Internal Medicine and Division of Hospital Medicine, Department of Medicine, University of Colorado, Aurora, CO, USA. SUSAN.CALCATERRA@CUANSCHUTZ.EDU.
2 Department of Medicine, Boston Medical Center, Section of General Internal Medicine, Clinical Addiction Research and Education (CARE) Unit, Boston University Chobanian & Avedisian School of Medicine, Grayken Center for Addiction, Boston, MA, USA.