1. Department of Adult Congenital Heart Disease, National Heart and Lung Institute, Imperial College London, Royal Brompton Hospital, Sydney Street, London, UK
2. Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's and St. Thomas' NHS Foundation Trust, Westminster Bridge Road, London, UK
3. Department Cardiovascular Sciences (KU Leuven), Congenital and Structural Cardiology (CSC UZ Leuven), Leuven, Belgium
4. Pediatric Heart Center, University Children's Hospital Zurich, Steinwiesstrasse 75, Zurich, Switzerland
5. Adult Congenital Heart Disease, Guy's and St Thomas' Hospital, Westminster Bridge Road, London, UK
6. Department of Cardiology, Erasmus Medical Center, Postbus 2040, CA Rotterdam, The Netherlands
7. Department of Paediatric Cardiology, Great Ormond Street Hospital, London, UK
8. Division of Cardiology, Labatt Family Heart Centre, Hospital for Sick Children and University of Toronto, SickKids, 555 University Avenue Toronto, Ontario, Canada
9. Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
10. Departments of Paediatrics, University of Texas, Southwestern Medical Center, Dallas, TX, USA
11. Cardiac Department, Eastern Road, Brighton, East Sussex, UK
12. APHM, La Timone Hospital, Cardiology Department, Boulevard Jean Moulin, Marseille, France
13. Department of Cardiology, Sognsvannsveien 20, Oslo, Norvegia
14. Department of Cardiology, 300 Longwood Avenue, Farley, Boston, Massachusetts, USA
15. Albert-Schweitzer Str. 33, Münster, Germany