1. Department of Pediatric Pneumonology and Allergy Medical University of Warsaw Warsaw Poland
2. Department of Pediatrics Medical University of Warsaw Warsaw Poland
3. Department of Pediatrics Turku University Hospital and University of Turku Turku Finland
4. Department of Pediatric Allergy and Immunology Istanbul Medeniyet University Göztepe Training and Research Hospital Istanbul Turkey
5. Astrid Lindgren Children's Hospital Karolinska University Hospital Stockholm Sweden
6. Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
7. Immunology and Allergy Unit Department of Medicine Solna Karolinska Institutet Karolinska University Hospital Stockholm Sweden
8. Allergy Department 2nd Pediatric Clinic University of Athens Athens Greece
9. Imperial College Healthcare NHS Trust London UK
10. Division of Infection Immunity & Respiratory Medicine University of Manchester Manchester UK
11. Pediatric Allergology Department of Pediatrics Dr. von Hauner Children's Hospital, University Hospital, Member of German Center for Lung Research (DZL) Munich Germany
12. Centre for Inflammation Research Queen's Medical Research Institute University of Edinburgh Edinburgh UK
13. Institute of Laboratory Medicine and Pathobiochemistry Molecular Diagnostics, Member of German Center for Lung Research (DZL) and International Inflammation (in‐FLAME) Network, Worldwide Universities Network (WUN) Philipps‐University Marburg Marburg Germany
14. Universities of Giessen and Marburg Lung Center (UGMLC) Philipps Universität Marburg Germany
15. German Center for Lung Research (DZL) Marburg Germany
16. Department of Parasitology Leiden University Medical Center Leiden The Netherlands