1. Università degli Studi di Padova, Italy
2. UCL Great Ormond Street Institute of Child Health, London, United Kingdom
3. Royal Manchester Children's Hospital, Manchester, United Kingdom
4. Great Ormond Street Hospital, London, United Kingdom
5. Great Ormond Street Hospital for children, London, United Kingdom
6. Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
7. Sidra Medicine, Doha, Qatar
8. Bristol Royal Hospital for Children, Bristol, United Kingdom
9. Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom, Newcastle upon Tyne, United Kingdom
10. University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, United Kingdom
11. University College London Hospital, London, United Kingdom
12. UCLH, London, United Kingdom
13. Great Ormond Street Hospital for children, United Kingdom