1. Division of Cardiology (M.L.O., A.C.G., M.J.G., Y.D., J.J.R.), The Children’s Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania.
2. Center for Pediatric Clinical Effectiveness, The Children’s Hospital of Philadelphia, PA (M.L.O., A.C.G., L.S., H.M.G., M.E.M.).
3. Leonard Davis Institute University of Pennsylvania, Philadelphia (M.L.O.).
4. Cardiovascular Outcomes, Quality, and Evaluative Research Center University of Pennsylvania, Philadelphia (M.L.O.).
5. Division of Cardiac Critical Care Medicine (A.G.D.), The Children’s Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania.
6. Division of Cardiothoracic Surgery (C.E.M.), The Children’s Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania.