1. Pneumology LungenClinic Grosshansdorf, Member of the German Center for Lung Research (DZL)Airway Research Center North (ARCN) Grosshansdorf Germany
2. University Hospital Schleswig‐Holstein, Campus Kiel, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN) Kiel Germany
3. Leibniz Lung Center Research Center Borstel, Member of the German Center for Lung Research (DZL),Airway Research Center North (ARCN) Borstel Germany
4. Division of Animal Physiology and Immunology School of Life Sciences Weihenstephan Technical University of Munich Munich Germany
5. Flow Cytometry Core Unit Leibniz Lung Center Borstel, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN) Borstel Germany
6. Pulmonary Research Institute LungenClinic Grosshansdorf, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN) Grosshansdorf Germany
7. Department of General and Interventional Cardiology University Heart Center Hamburg Hamburg Germany
8. Inselspital Bern University Children’s Hospital Bern Switzerland
9. Department of Pediatric Pulmonology and Allergology Children’s Hospital at the University of Luebeck, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN) Luebeck Germany
10. Dr. von Hauner Children's Hospital, Helmholtz Center Munich Comprehensive Pneumology Center – Munich (CPC‐M), Member of the German Center for Lung Research (DZL) Munich Germany
11. Department of Pediatric Pulmonology, Allergology and Neonatology Hannover Medical School, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease (BREATH) Hannover Germany
12. Institute of Medical Biometry and Statistics University of Luebeck, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN) Luebeck Germany
13. Department of Pathology and Medical Biology University of Groningen, University Medical Center Groningen, GRIAC Research Institute Groningen The Netherlands