1. Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
2. Paediatric Department, University Hospitals Würzburg, Würzburg, Germany
3. Division of Human Genetics, Department of Pediatrics, Inselspital, University of Berne, Berne, Switzerland
4. Division of Respiratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
5. Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada
6. Department of Pediatrics, Division of Respirology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
7. School of Health and Human Performance, Faculty of Health, Dalhousie University, Halifax, Nova Scotia, Canada
8. Child Development & Exercise Center, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
9. Northwestern University Feinberg School of Medicine, Chicago, Illinois
10. Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Sick Children, Edinburgh, United Kingdom
11. Montreal Children’s Hospital – McGill University Health, Montreal, Quebec, Canada
12. Orthopaedic Surgery and Sport Medicine, University of Sevilla, Hospital Virgen del Rocío, Sevilla, Spain
13. Department of Pulmonology, Mother and Child Health Institute of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia
14. Discipline of Physiotherapy, Faculty of Health Sciences, University of Sydney, Sydney, Australia
15. Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, Australia
16. Departement of Pulmonology, Hietzing Hospital, Vienna, Austria
17. Georgia Prevention Institute, Augusta University, Augusta, Georgia
18. Service de pneumologie et allergologie pédiatriques, Hôpital Necker Enfants malades, Assistance Publique – Hôpitaux de Paris, Université Paris Descartes, Paris, France
19. Department of Pediatrics, Cystic Fibrosis Center, Sapienza University of Rome, Rome, Italy
20. Cystic Fibrosis Unit, Bambino Gesù Children’s Hospital, Rome, Italy
21. University Children’s Hospital Basel, Basel, Switzerland
22. Pulmonary Institute, Schneider Children’s Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; and
23. Paediatric Pulmonology and CF Unit, Paediatric Department, Aristotle University of Thessaloniki, Thessaloniki, Greece