1. Department of Health Policy, Vanderbilt University School of Medicine, Nashville, Tennessee (W.A.R., J.R.D.)
2. Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee (C.P.C., A.M.H., A.L.D.)
3. Departments of Medicine and Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee (C.M.S., K.T.M.)
4. Departments of Health Policy and Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee (W.S.)
5. Department of Neurology, Vanderbilt University School of Medicine, Nashville, Tennessee (E.Z.)
6. Departments of Health Policy and Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (W.D.D.)