1. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania (P.P.R., P.L.A., E.A.B., V.M.V., R.D.B., V.S.P., M.L., P.P., D.S., S.M.N., A.N., A.S., M.M., M.B., K.R.R., D.S.G.)
2. Gift of Life Donor Program, Philadelphia, Pennsylvania (R.H., L.S.)
3. Perelman School of Medicine and Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania (J.T.)
4. University of Pennsylvania Health System, Philadelphia, Pennsylvania (C.G., J.S.)
5. Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (B.A.N.)