1. From the Division of Cardiology, Department of Pediatrics (C.J.P., J.J.R., G.W., S.T.); Division of Critical Care Medicine, Department of Anesthesia and Critical Care Medicine (G.W., S.T.); Division of Neurology, Department of Pediatrics (S.E.M., D.J.L.); Division of Biostatistics and Epidemiology (D.M.S.); Division of Cardiothoracic Anesthesia, Department of Anesthesia and Critical Care Medicine (S.C.N., L.M.M.); and Department of Radiology (R.A.Z.), The Children’s Hospital of Philadelphia and the...