1. From the Department of Congenital Heart Disease and Pediatric Cardiology (I.V., C.H., C.P., A.C.A., M.P., D.G., H.-H.K., C.R.), Department of Cardiac and Vascular Surgery (J.S.), and Department for Medical Informatics and Statistics (J.H.), University Hospital of Schleswig-Holstein, Kiel, Germany; and Department of Radiology, Brigham and Women’s Hospital, Harvard University, Boston, MA (M.J.-H.).