1. Centre for Inherited Cardiovascular Diseases, Great Ormond Street Hospital, Great Ormond Street, London, UK
2. Department of Paediatric Cardiology, Institute of Cardiovascular Sciences University College London, UK
3. Department of Paediatric Cardiology, Royal Hospital for Children, Glasgow, UK
4. Department of Paediatric Cardiology, University Hospitals Bristol NHS Foundation Trust, UK
5. Department of Paediatric Cardiology, Birmingham Women and Children’s NHS Foundation Trust, UK
6. Department of Paediatric Cardiology, University Hospital of Wales, Cardiff, UK
7. Department of Paediatric Cardiology, Leeds Teaching Hospital NHS Trust, UK
8. Department of Paediatric Cardiology, Royal Brompton Hospital and National Heart and Lung Institute, Imperial College London Harefield, UK
9. Department of Paediatric Cardiology, University Hospitals of Leicester, UK
10. Department of Paediatric Cardiology, Evelina London Children’s Hospital and Guys and St Thomas’ NHS Foundation Trust, UK
11. Department of Paediatric Cardiology, University Hospital Southampton NHS Foundation Trust, UK
12. Department of Paediatric Cardiology, Oxford University Hospitals NHS Foundation Trust, UK
13. Department of Paediatric Cardiology, Alder Hey Children’s Hospital, Liverpool, UK
14. Department of Paediatric Cardiology, The Freeman Hospital, Newcastle, UK