1. Division of General Internal Medicine and Primary Care, Brigham and Women’s Hospital, and Harvard Medical School, Boston, Massachusetts (D.M.L., A.S., H.S., S.L., H.H.E.)
2. Harvard Medical School; Lawrence Center for Quality and Safety, Massachusetts General Hospital; and Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts (D.M.S.)
3. Harvard Medical School; Lawrence Center for Quality and Safety, Massachusetts General Hospital; and Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts (J.P.Z.)
4. Kaiser Permanente Northern California Division of Research, Oakland, California (L.C.M.)
5. Harvard Medical School and Division of Nephrology, Massachusetts General Hospital, Boston, Massachusetts (M.S.L.)
6. Maine Medical Center, Portland, Maine (C.G.R.)
7. Division of General Internal Medicine and Primary Care, Brigham and Women’s Hospital, Boston, Massachusetts (C.I., M.L.F., S.D., M.G.A.)
8. Mass General Brigham, Somerville, Massachusetts (L.A.V.)
9. Division of General Internal Medicine and Primary Care, Brigham and Women’s Hospital; Harvard Medical School; and CRICO and the Risk Management Foundation of the Harvard Medical Institutions, Boston, Massachusetts (L.S.)
10. CRICO and the Risk Management Foundation of the Harvard Medical Institutions, Boston, Massachusetts (P.F., J.S.E., M.E.R.)
11. Harvard Medical School; Lawrence Center for Quality and Safety, Massachusetts General Hospital; Division of General Internal Medicine, Massachusetts General Hospital; and Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts (E.M.)
12. Division of General Internal Medicine and Primary Care, Brigham and Women’s Hospital; Harvard Medical School; and Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts (D.W.B.).