1. University of Leipzig Medical Center, Leipzig, Germany
2. Washington University
3. University Hospital of Copenhagen, Rigshospitalet
4. CHU de Nantes
5. CHU Nantes
6. University of Oxford
7. Boston Children's Hospital
8. Università degli Studi di Milano Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico
9. Robert-Debré University Hospital
10. University of Leipzig Medical Center
11. A.O.R.N. G. Rummo
12. Medical College of Wisconsin
13. Medical College of Wisconsin and Children's Hospital of Wisconsin
14. The Hospital for Sick Children, Toronto, Canada
15. Hospital for Sick Children
16. ASST Papa Giovanni XXIII
17. Kepler University Hospital, School of Medicine, Johannes Kepler University Linz
18. Odense University Hospital
19. Syddansk Universitet
20. Universitätsklinikum Essen
21. Medical Genetics and Applied Genomics
22. University of Tübingen
23. Centre Hospitalier Universitaire Vaudois - CHUV
24. Medical University of Vienna
25. Medical University of Innsbruck
26. University Medical Center Leipzig
27. University of Leipzig, Medical Center