1. Centre for Inherited Cardiovascular Diseases Great Ormond Street Hospital London WC1N 3JH UK
2. Institute of Cardiovascular Sciences University College London London UK
3. Department of Cardiology The Children's Memorial Health Institute Warsaw Poland
4. Careggi University Hospital Florence Italy
5. Meyer Children's Hospital Florence Italy
6. Monaldi Hospital Naples Italy
7. Bambino Gesu Hospital Rome Italy
8. Royal Hospital for Children Glasgow UK
9. West of Scotland Centre for Genomic Medicine Queen Elizabeth University Hospital Glasgow UK
10. University Hospitals Bristol NHS Foundation Trust Bristol UK
11. Birmingham Women and Children's NHS Foundation Trust Birmingham UK
12. University Hospital of Wales Cardiff UK
13. Leeds Teaching Hospitals NHS Trust Leeds UK
14. Royal Brompton and Harefield Hospital, National Heart and Lung Institute Imperial College London London UK
15. University Hospitals of Leicester Leicester UK
16. Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation Trust London UK
17. University Hospital Southampton NHS Foundation Trust Southampton UK
18. Oxford University Hospitals NHS Foundation Trust Oxford UK
19. Department of Pediatrics Children's Hospital ‘Louis Turcanu’, University of Medicine and Pharmacy “Victor Babes” Timisoara Timisoara Romania
20. Alder Hey Children's Hospital Liverpool UK
21. The Freeman Hospital Newcastle UK