1. Congenital Heart Surgeons Society Data Center, The Hospital for Sick Children, Toronto, Ontario, Canada
2. Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
3. Department of Cardiovascular Surgery, Children’s Hospital of Michigan, Detroit, MI, USA
4. Kosair Children’s Hospital, University of Louisville, Louisville, KY, USA
5. Department of Cardiothoracic Surgery, Arnold Palmer Hospital for Children, Orlando, FL, USA
6. Johns Hopkins All Children's Heart Institute, Johns Hopkins University, All Children's Hospital, St Petersburg, FL, USA
7. Department of Surgery, University of Chicago, Chicago, IL, USA
8. Cardiothoracic Surgery, Yale University, New Haven, CT, USA
9. Montreal Children’s Hospital, Montreal, PQ, Canada
10. Department of Pediatric Cardiac Surgery, University of California-San Francisco Benioff Children's Hospital, San Francisco, CA, USA
11. Cleveland Clinic, Cleveland, OH, USA
12. Pediatric Cardiac Surgery, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
13. Division of Congenital Heart Surgery, Texas Children’s Hospital, Houston, TX, USA
14. Glendale Department of Childhealth, University of Arizona College of Medicine, Phoenix, AZ, USA
15. Division of Cardiac Surgery, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
16. Department of Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
17. Johns Hopkins University, Florida Hospital for Children, Orlando, FL, USA