1. From the Department of Social Sciences and Health Policy, Wake Forest School of Medicine, Winston-Salem, NC (M.A.H.); the USC-Brookings Schaeffer Initiative for Health Policy, Washington, DC (M.A.H., L.A., P.B.G., E.T.); and the Sol Price School of Public Policy (P.B.G.) and School of Pharmacy (E.T.), University of Southern California, Los Angeles.