1. University Hospital of North Norway, UiT The Arctic University of Norway, and Public Dental Competence Center of Northern Norway; Tromsø Norway
2. University Hospital of North Norway, and UiT The Arctic University of Norway; Tromsø Norway
3. Istituto Giannina Gaslini and PRINTO Coordinating Center; Genoa Italy
4. UiT The Arctic University of Norway, Tromsø, and University of Oslo; Oslo Norway
5. Norwegian University of Science and Technology and St. Olavs University Hospital; Trondheim Norway
6. Princess Margaret Hospital for Children; Perth Australia
7. Universidade Federal do Rio de Janeiro, and Instituto de Puericultura e Pediatria Martagao Gesteira; Rio de Janeiro Brazil
8. Azienda Ospedaliero-Universitaria Meyer; Florence Italy
9. Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico; Milan Italy
10. Royal Hospital for Sick Children; Glasgow UK
11. Newcastle University, Newcastle Hospitals NHS Foundation Trust, and Great North Children's Hospital; Newcastle Upon Tyne UK
12. University Medical Center Utrecht; Utrecht The Netherlands
13. Oslo University Hospital and University of Oslo; Oslo Norway
14. Clinica Pediatrica; Padova Italy
15. Alder Hey Children's NHS Foundation Trust; Liverpool UK
16. Kantonsspital Winterthur; Winterthur Switzerland
17. Children's Hospital and Helsinki University Central Hospital; Helsinki Finland
18. Università di Genova, Istituto Giannina Gaslini, and PRINTO Coordinating Center; Genoa Italy
19. Istituto Giannina Gaslini; Genoa Italy