1. Institute for Social Medicine, Epidemiology and Health Economics; Charité - Universitätsmedizin Berlin; Berlin Germany
2. Department of Paediatric Pneumology and Immunology; Charité - Universitätsmedizin Berlin; Berlin Germany
3. Department of Pediatric Pulmonology & Pediatric Allergology; University Medical Center Groningen; Groningen The Netherlands
4. Clinical and Experimental Sciences Academic Units; Faculty of Medicine; University of Southampton; Southampton UK
5. Department of Nutrition and Dietetics; Southampton Children's Hospital; Southampton UK
6. Department of Immunology; Landspitali - The National University Hospital of Iceland; Reykjavik Iceland
7. Department of Clinical Immunology and Allergy; University of Łódź; Łódź Poland
8. Institute of Human Development; University of Manchester; Manchester UK
9. Allergy Department; 2nd Paediatric Clinic; University of Athens; Athens Greece
10. Department of Allergy; Hospital La Paz Institute for Health Research; Madrid Spain
11. Faculty of Medicine; Vilnius University; Vilnius Lithuania
12. Allergy Department; Hospital Clinico San Carlos IdISSC; Madrid Spain
13. Allergy Unit; Department of Dermatology; University Hospital; Zürich Switzerland
14. Departments of Experimental Immunology and of Otorhinolaryngology; Academic Medical Center; Amsterdam The Netherlands
15. German Allergy and Asthma Association; Mönchengladbach Germany
16. Institute of Inflammation and Repair; University of Manchester; Manchester UK
17. Icahn School of Medicine at Mount Sinai; New York NY USA