1. Section of Pediatric and Congenital Cardiac Surgery, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Medical School, Padova, Italy
2. University Medical Center, Leiden, Netherlands
3. Department for Cardiovascular Surgery, University Hospital, University of Bern, Bern, Switzerland
4. Division of Cardiac Surgery, IRCCS Policlinico San Donato Milanese, Milan, Italy
5. Department of Pediatric Cardiology and Congenital Heart Disease, Hôpital Marie Lannelongue, Université Paris-Sud, Le Plessis-Robinson, France
6. Deutsches Herzzentrum, Munich, Germany
7. Department of Cardiovascular Surgery, Katholieke Universiteit Leuven, Leuven, Belgium
8. Cardiothoracic Surgery Hospital de Santa Marta Rua de Santa Marta, Lisbon, Portugal
9. Department of Pediatric Cardiothoracic Surgery, Children's Hospital of Georgia, Augusta, GA, USA
10. Department of Cardiac Surgery, University Hospital Ghent, Ghent, Belgium
11. Division of Cardiac Surgery, University Hospital Center of Tirana, Tirana, Albania
12. Department of Pediatric Cardiac Surgery, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
13. Congenital Cardiac Surgery Department, Hospital Universitario La Paz, Madrid, Spain
14. Department of Pediatric Cardiac Surgery, National Institute of Cardio-Vascular Diseases—Childrens Heart Center, Bratislava, Slovakia
15. PCare Laboratory, Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padova, Italy
16. Athens Heart Surgery Institute and Iaso Children’s Hospital, Athens, Greece
17. Department of Statistical Sciences, University of Padova, Padova, Italy