1. Institute for Asthma and Allergy Prevention (IAP), Helmholtz Zentrum Munich German Research Center for Environmental Health (GmbH) Munich Germany
2. German Center for Lung Research (DZL) Comprehensive Pneumology Center Munich (CPC‐M) Munich Germany
3. Center for Synthetic Microbiology (SYNMIKRO) Philipps‐University Marburg Marburg Germany
4. Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics University of Marburg Marburg Germany
5. Department of Paediatric Allergology, Dr von Hauner Children's Hospital Ludwig Maximilians University Munich Germany
6. German Center for Lung Research (DZL) Airway Research Center North (ARCN) Großhansdorf Germany
7. University Children's Hospital Luebeck Germany
8. Department of Paediatric Pneumology, Allergology and Neonatology Hannover Medical School Hannover Germany
9. German Center for Lung Research (DZL) Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH) Hannover Germany
10. German Center for Lung Research (DZL) LungenClinic Grosshansdorf GmbH, Airway Research Center North (ARCN) Grosshansdorf Germany
11. Institute of Medical Biometry and Statistics (IMBS) University Medical Center Schleswig‐Holstein Luebeck Germany
12. University Children's Hospital Marburg, University of Marburg Marburg Germany
13. German Center for Lung Research (DZL) University of Giessen, Marburg Lung Center (UGMLC) Giessen Germany
14. Department of Pediatric Respiratory Medicine, Inselspital, University Children's Hospital of Bern University of Bern Bern Switzerland
15. Kilimanjaro Christian Medical University College (KCMUCo) Moshi Tanzania