1. Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA
2. Diabetes Population Health Research Center, Massachusetts General Hospital, Boston, MA
3. Harvard Medical School, Boston, MA
4. Division of General Medicine and Clinical Epidemiology, University of North Carolina School of Medicine, Chapel Hill, NC
5. Section of General Internal Medicine, Veterans Affairs Portland Health Care System, Portland, OR
6. Division of General Internal Medicine and Geriatrics, Oregon Health & Science University, Portland, OR
7. Institute for Research, Quality, and Policy in Homeless Health Care, Boston Health Care for the Homeless Program, Boston, MA