1Division of Cardiology, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN USA
2Division of Cardiology, Department of Pediatrics, C.S. Mott Children’s Hospital, University of Michigan School of Medicine, Ann Arbor, MI USA
3Division of Cardiology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MA USA
4Department of Pediatrics, Heart Institute, UPMC Children’s Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
5Morgan Stanley Children’s Hospital, Columbia University Vagelos College of Physicians & Surgeons, New York, NY USA
6Center for Research and Evaluation, Kaiser Permanente Georgia, Atlanta, USA
7Lillie Frank Abercrombie Division of Cardiology, Department of Pediatrics, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX USA
8Section of Pediatric Cardiothoracic Surgery, Department of Cardiac Surgery, C.S. Mott Children’s Hospital, University of Michigan School of Medicine, Ann Arbor, MI USA
9Division of Pediatric Cardiology, Department of Pediatrics, Children’s of Alabama, University of Alabama Birmingham School of Medicine, Birmingham, AL USA
10Division of Cardiology, Department of Pediatrics, University of California San Francisco School of Medicine, San Francisco, CA USA
11The Heart Institute, Cincinnati Children’s Hospital Medical Center and Division of Pediatric Cardiology, University of Cincinnati College of Medicine, Cincinnati, OH USA
12Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA USA
13Children’s Heart Center Cardiology, Department of Pediatrics, Children’s Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA USA
14The Cardiac Center at the Children’s Hospital of Philadelphia, Philadelphia, PA USA
15Connecticut Children’s Hospital, Hartford, CT USA
16Pediatric Neurodevelopmental Center, Atlanta, GA USA
17Thomas P. Graham Jr. Division of Pediatric Cardiology, Pediatric Heart Institute, Vanderbilt University Medical Center, 2200 Children’s Way, 5230 Doctors’ Office Tower, Nashville, TN 37232 USA