1 Division of Cardiology, Department of Pediatrics (M.P.D., A.S., E.B.R.), Columbia University Vagelos College of Physicians and Surgeons and NewYork-Presbyterian Morgan Stanley Children's Hospital.
2 Section of Pediatric and Congenital Heart Surgery, Department of Surgery (A.B.G., E.A.B.), Columbia University Vagelos College of Physicians and Surgeons and NewYork-Presbyterian Morgan Stanley Children's Hospital.