1. Department of Anesthesiology and Critical Care Medicine (H.H.N., M.F., C.H., P.S., A.C., C.V., M.A.J.)
2. Laboratory for Percutaneous Surgery, Queen’s University, Kingston, ON, Canada (A.L.).
3. Division of Cardiology, Children’s Hospital of Philadelphia, PA. (Y.W., D.J.G., M.S.C., M.A.J.)
4. Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania and Department of Pediatrics, Children’s Hospital of Philadelphia, PA. (J.H.)
5. Kitware Inc, NY (J.V., B.P., D.A., G.F.).
6. Division of Pediatric Cardiac Surgery, Children’s Hospital of Philadelphia, PA. (M.N.)