1. Division of Cardiac Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
2. Division of Cardiovascular Surgery, Department of Surgery, Johns Hopkins All Children’s Heart Institute, Johns Hopkins All Children’s Hospital and Florida Hospital for Children, St Petersburg, Tampa, and Orlando, FL, USA
3. Division of Pediatric Cardiovascular Surgery, The Montreal Children’s Hospital of the McGill University Health Centre, Montreal, Quebec, Canada
4. Pediatric and Congenital Cardiac Surgical Unit, University of Padova Medical School, Padova, Italy
5. Cardiovascular Surgery, Heart Institute of Japan, Tokyo Women’s Medical University, Tokyo, Japan
6. Department of Pediatric Cardiac Surgery and Pediatric Cardiology, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
7. Heart Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
8. Department of Cardiovascular Surgery, Mayo Clinic, Rochester, MN, USA
9. Instituto de Cardiopatías Congénitas, Fundación Cardioinfantil—IC, Universidad del Rosario, Bogota, Colombia
10. Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, CA, USA
11. Department of Cardiac Surgery and Congenital Heart Diseases, Instituto Nacional de Cardiologıa “Ignacio Chavez” (National Institute of Cardiology “Ignacio Chavez”), Mexico City, Mexico
12. Mayo Clinic, Rochester, MN, USA
13. Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
14. National Cardiothoracic Center, Korle Bu Teaching Hospital, Accra, Ghana
15. Department of Surgery, University of Health and Allied Sciences, Ho, Ghana
16. Green Lane Paediatric and Congenital Cardiac Services, Starship Children’s Hospital, Auckland, New Zealand
17. Hospital de Santa Marta, NOVA Medical School, Lisbon, Portugal
18. Fortis Escorts Heart Institute and Research Centre, New Delhi, Delhi, India
19. The Paediatric Cardiac Centre for Africa, Sunninghill Hospital, Johannesburg, South Africa
20. University of Alabama, Birmingham, AL, USA
21. Division of Congenital Heart Surgery, Hospital Privado Universitario de Córdoba, Córdoba, Argentina
22. Department of Pediatric Thoracic and Cardiovascular Surgery, Xinhua Hospital, Shanghai Children’s Medical Center, Shanghai Second Medical University, Shanghai, China
23. Department of Pediatric and Congenital Heart Surgery, Children’s Memorial Health Institute, Warsaw, Poland
24. Department of Surgery, University of Missouri–Kansas City School of Medicine, Kansas City, MI, USA
25. Athens Heart Surgery Institute and Department of Pediatric, Congenital Heart Surgery at IASO Children’s Hospital, Athens, Greece
26. Children’s National Medical Center, Washington, DC, USA