1. Landspitali University Hospital Reykjavik Iceland
2. Faculty of Medicine University of Iceland Reykjavik Iceland
3. Department of Computer Science University of Iceland Reykjavík Iceland
4. Children's Hospital Reykjavik Reykjavik Iceland
5. Department of Allergy Landspitali University Hospital Reykjavik Iceland
6. Children’s Hospital Landspitali University Hospital Reykjavik Iceland
7. Human Development and Health & Clinical and Experimental Sciences Faculty of Medicine University of Southampton UK
8. NIHR Southampton Biomedical Research Centre University Hospital Southampton NHS Foundation Trust Southampton UK
9. The David Hide Asthma and Allergy Research Centre St Mary’s Hospital Isle of Wight UK
10. Dietetic Department Salford Royal NHS Foundation Trust UK
11. Clinical and Experimental Sciences Faculty of Medicine University of Southampton UK
12. Division of Infection, Immunity and Respiratory Medicine School of Biological Sciences Manchester Institute of Biotechnology University of Manchester Manchester UK
13. Allergy Department 2nd Pediatric Clinic National and Kapodistrian University of Athens Athens Greece
14. Division of Infection, Immunity & Respiratory Medicine University of Manchester Manchester UK
15. Department of Allergy La Paz University Hospital IdiPAZ Madrid Spain
16. Department of Pediatric Pulmonology and Pediatric Allergology University Medical Center Groningen University of Groningen The Netherlands
17. Department of Pediatric Pulmonology and Pediatric Allergology Emma Children's Hospital Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
18. Department of Immunology, Allergy and Rheumatology Medical University of Lodz Lodz Poland
19. Medical Faculty Clinic of Chest Diseases, Allergology and Immunology Vilnius University Vilnius Lithuania
20. Faculty of Medicine Clinic of Children’s Diseases Vilnius University Vilnius Lithuania
21. Department of Paediatric Pneumology and Immunology Charité – Universitätsmedizin Berlin Berlin Germany
22. Epidemiology Unit German Rheumatism Research Centre Berlin Germany
23. Institute of Social Medicine, Epidemiology and Health Economics Charité – Universitätsmedizin Berlin Berlin Germany
24. Centre for Health Informatics School of Health Sciences The University of Manchester Manchester UK
25. Allergy Department Hospital Clinico San Carlos Universidad Complutense IdISSC ARADyAl Madrid Spain
26. Departments of Experimental Immunology and of Otorhinolaryngology Amsterdam University Medical Centers Amsterdam The Netherlands
27. Institute of Inflammation and Repair University of Manchester Manchester UK
28. Department for Infectious Disease Epidemiology Robert Koch‐Institut Berlin Germany
29. Institute of Clinical Epidemiology and Biometry University of Würzburg Würzburg Germany
30. State Institute of Health Bavarian Health and Food Safety Authority Bad Kissingen Germany