1. aDepartment of Pediatrics, University of Cincinnati College of Medicine, The Heart Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
2. bDivision of Cardiology, Duke Children’s Hospital, Durham, North Carolina
3. cDivision of Neonatology, Columbia University Medical Center, New York, New York
4. dDepartment of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
5. eDivision of Cardiology, Medical University of South Carolina, Charleston, South Carolina
6. fDepartment of Anesthesia, Colorado Children’s Hospital, Aurora, Colorado
7. gDepartment of Pediatrics, Children’s Hospital of Los Angeles, Los Angeles, California
8. hDepartment of Pediatric Cardiothoracic Surgery, The Children’s Hospital, Oklahoma City, Oklahoma