1. Massachusetts General Hospital, Boston; Harvard Medical School, Boston (Evins, Cather, Pachas, Thorndike, Levy, Fung, Potter, Schoenfeld); Bay Cove Human Services, Boston (Reyering, Deeb); Boston Medical Center, Boston University School of Medicine, Boston (Fischer); Department of Psychiatry, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, New Hampshire (Pratt); Mixed Methods Research Program, Department of Family Medicine, University of Michigan, Ann Arbor (Fetters).