1. University of Zurich, 27217, Epidemiology, Biostatistics and Prevention Institute, Zurich, Zurich, Switzerland;
2. Royal Hospital for Children and Young People, 59841, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
3. University of Zurich, 27217, Zurich, Zurich, Switzerland
4. Manchester University NHS Foundation Trust, 5293, Manchester, Greater Manchester, United Kingdom of Great Britain and Northern Ireland
5. Tel Aviv University, 26745, Tel Aviv, Israel
6. Rabin Medical center, Beilinson Hospital, Head, Pulmonary Institute , Petach Tikva, Israel
7. Hôpital Cochin, 26935, Service de Physiologie-Explorations Fonctionnelles, Paris, France
8. Hôpital Cochin, 26935, Service de Physiologie - Explorations fonctionnelles, Assistance Publique-Hôpitaux de Paris (AP-HP), APHP-CUP, Université de Paris, , Paris, Île-de-France, France
9. Western General Hospital,, Edinburgh, United Kingdom of Great Britain and Northern Ireland
10. NHS Lothian, 3129, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
11. University of Belgrade, 54801, Mother and Child Health Institute, Faculty of Medicine, Belgrade, Belgrade, Serbia
12. Grenoble Alpes University, INSERM, HP2 Laboratory, U1042, Grenoble, France
13. Queen Elizabeth University Hospital, 473300, Glasgow, Glasgow, United Kingdom of Great Britain and Northern Ireland
14. Icahn School of Medicine at Mount Sinai, Rehabilitation and Human PErformance, New York, New York, United States
15. Sir Charles Gairdner Hospital, 5728, Perth, Australia
16. University of Exeter, 3286, Exeter, Devon, United Kingdom of Great Britain and Northern Ireland
17. Royal Devon University Healthcare NHS Foundation Trust, 9553, Exeter, Devon, United Kingdom of Great Britain and Northern Ireland
18. Ruth Rappaport Children's Hospital, 58879, Pediatric Pulmonology Institute, Haifa, Haifa, Israel
19. Technion Israel Institute of Technology Ruth and Bruce Rappaport Faculty of Medicine, 58880, Haifa, Haifa, Israel
20. University Children´s Hospital, Wuerzburg, Germany
21. University of British Columbia, Department of Medicine, Vancouver, British Columbia, Canada
22. St. Paul's Hospital, Vancouver, Vancouver, Canada
23. University of Portsmouth, 6697, Portsmouth, Hampshire, United Kingdom of Great Britain and Northern Ireland
24. St. Michael's Hospital , Division of Respirology, Adult Cystic Fibrosis Centre, Toronto, Ontario, Canada
25. The Hospital for Sick Children, 7979, Toronto, Ontario, Canada
26. Hospital for Sick Children, 7979, Toronto, Ontario, Canada
27. University of Sydney, Sydney, Australia
28. Dalhousie University, 3688, Halifax, Nova Scotia, Canada
29. Centre Hospitalier Intercommunal de Creteil, 26949, Creteil, Île-de-France, France
30. Cincinnati Children\'s Hospital Medical Center, 2518, Cincinnati, Ohio, United States
31. University of Toronto HSC, Division of Respiratory Medicine, Toronto, Ontario, Canada
32. University Hospitals Würzburg, Würzburg, Germany