1. Corporal Michael J. Crescenz VA Medical Center and Perelman School of Medicine and Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania (A.S.N.)
2. University of Washington School of Medicine, Seattle, Washington, and Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania (J.M.L.)
3. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania (K.A.L., Y.Z., A.M., R.W., C.T.D., D.S.C., J.L.)
4. Perelman School of Medicine and Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania (J.Z., E.J.E.).