1. Department of Pediatric Respiratory Medicine, Immunology, and Critical Care Medicine and
2. German Center for Lung Research, Associated Partner Site, Berlin, Germany;
3. Berlin Institute of Health at Charité – Universitätsmedizin Berlin, Berlin, Germany;
4. Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany;
5. Department of Diagnostic and Interventional Radiology,
6. Department of Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik, and
7. Department of Radiology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany;
8. Department of Pediatrics, Justus Liebig University Giessen, Giessen, Germany;
9. Universities of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany;
10. Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, University of Bern, Bern, Switzerland;
11. Airway Research Center North, German Center for Lung Research, Grosshansdorf, Germany;
12. Department for Pediatric Pulmonology, Allergology, and Neonatology and
13. BREATH, German Center for Lung Research, Hannover Medical School, Hannover, Germany; and
14. Vertex Pharmaceuticals Incorporated, Boston, Massachusetts
15. Division of Pediatric Pulmonology and Allergy and Cystic Fibrosis Center, Department of Pediatrics, Heidelberg University Hospital, Heidelberg, Germany;