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