1. From the Department of Medicine and Brigham and Women’s Physicians Organization, Brigham and Women’s Hospital (L.S.R.), Harvard Medical School (L.S.R., J.Y.R., A.B.J.), Harvard T.H. Chan School of Public Health (J.Y.R.), and Massachusetts General Hospital (J.Y.R., A.B.J.) — all in Boston; and the National Bureau of Economic Research, Cambridge, MA (A.B.J.).