1. Department of Congenital Heart Disease and Pediatric Cardiology University Hospital Schleswig‐Holstein, Campus Kiel Kiel Germany
2. German Centre for Cardiovascular Research (DZHK) Partner Site Hamburg/Kiel/Lübeck Kiel Germany
3. Department of Medical Informatics and Statistics University Hospital Schleswig‐Holstein, Campus Kiel Kiel Germany
4. Medical Faculty Kiel University Kiel Germany
5. Department of Pediatric Cardiology Royal Brompton Hospital London UK
6. Cardiovascular Sciences Imperial College London UK
7. CMR Unit Royal Brompton Hospital, Guy's and St Thomas' NHS Foundation Trust London UK