1. From the Department of Health Policy and Management, Harvard T.H. Chan School of Public Health (M.L.B., E.M.), the Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women’s Hospital (M.L.B.), the Department of Health Care Policy, Harvard Medical School (H.A.H., A.M.), and the Division of General Medicine, Beth Israel Deaconess Medical Center (A.M.), Boston, and the National Bureau of Economic Research, Cambridge (E.M.) — all in Massachusetts; the Dartmouth...