1. Clinic for Paediatric Pneumology, Allergology, and Neonatology,
2. Department of Pediatrics,
3. National Heart and Lung Institute, Imperial College London, London, United Kingdom;
4. Department of Paediatric Respiratory Medicine and the Imperial Centre for Paediatrics and Child Health, Imperial College and Royal Brompton Hospital, London, United Kingdom;
5. Department of Diagnostic and Interventional Radiology, and
6. Centre for Human Genetics, University of Regensburg, Regensburg, Germany;
7. Institute for Pathology, Hannover Medical School, Hannover, Germany;
8. Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany; and
9. Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada;
10. British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada