1. Department of Congenital Heart Disease and Pediatric Cardiology, University Hospital Schleswig-Holstein , Campus Kiel , Germany
2. German Center for Cardiovascular Research (DZHK) , Partner Site Hamburg/Lübeck/Kiel, Kiel , Germany
3. ASST Papa Giovanni XXIII , Bergamo , Italy
4. Department of Paediatric Cardiology, Children’s Health Ireland at Crumlin , Dublin 12 , Ireland
5. Institute of Clinical Physiology CNR , Massa , Italy
6. Heart Hospital, G. Monastery foundation , Massa , Italy
7. Royal Brompton Hospital, Part of Guy’s and St Thomas’ NHS Foundation Trust , Sydney Street, London SW3 6NP , UK
8. National Heart and Lung Institute, Imperial College , London , UK
9. School of Biomedical Engineering and Imaging Sciences, King’s College London, St. Thomas’ Hospital , London , UK
10. Institute for Biological and Medical Engineering and School of Engineering, Pontificia Universidad Católica de Chile , Santiago , Chile
11. Pediatric Heart Center, University Children’s Hospital Zurich , Zurich , Switzerland
12. Division of Cardiology, Oregon Health and Science University Hospital , Portland, OR , USA
13. Department of Pediatric Cardiology and Critical Care, Hannover Medical School , Hannover , Germany
14. European Pediatric Pulmonary Vascular Disease Network , Berlin , Germany
15. Department of Pediatrics, Division of Cardiology, and Department of Radiology, Erasmus MC-Sophia Children's Hospital , Rotterdam , The Netherlands
16. Department of Paediatric Cardiology, Royal Brompton Hospital , Sydney Street, London SW3 6NP , UK
17. Clinic for Pediatric Cardiology and Congenital Heart Disease Klinikum , Stuttgart Germany
18. Department of Radiology, Fondazione G. Monasterio CNR-Regione Toscana , Pisa , Italy
19. U.O.C. Bioingegneria, Fondazione G. Monasterio CNR-Regione Toscana , Pisa , Italy
20. Pediatric Cardiology Department, Hospital de Santa Cruz, Centro Hospitalar Lisboa Ocidental , Lisbon , Portugal
21. Centre for Translational Cardiovascular Imaging, Institute of Cardiovascular Science, University College London , London , UK
22. New Children’s Hospital Pediatric Research Center, Helsinki University Hospital , Helsinki , Finland
23. Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Location AMC , Amsterdam , The Netherlands
24. Department of Pediatric Cardiology, Wilhelmina Children’s Hospital/University Medical Center Utrecht , Utrecht , The Netherlands
25. Department of Congenital Heart Disease, Evelina London Children’s Hospital , Westminster Bridge Road, London SE1 7EH , UK
26. CIBER Cardiovascular, Instituto de Salud Carlos III , Madrid , Spain
27. European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart , Amsterdam , The Netherlands
28. Servicio de Cardiología, Hospital Universitario Vall Hebrón, Institut de Recerca Vall Hebrón (VHIR), Departamento de Medicina, Universitat Autònoma de Barcelona , Barcelona , Spain
29. Department for Cardiothoracic, Transplant, and Vascular Surgery, Hannover Medical School , Hannover , Germany
30. Department of Pediatrics, UT Southwestern/Children’s Health , Dallas, TX , USA