1. Department of Women and Child Health; Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region; University of Padua; Padua Italy
2. The David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Newport Isle of Wight UK
3. NIHR Biomedical Research Centre; University Hospital Southampton NHS Foundation Trust; Southampton UK
4. Clinical and Experimental Sciences and Human Development in Health Academic Units; Faculty of Medicine; University of Southampton; Southampton UK
5. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
6. Faculty of Medicine; Department of Allergy and Clinical Immunology; Transylvania University Brasov; Brasov Romania
7. Faculty of Medicine; Primary Care and Population Science; University of Southampton; Southampton UK
8. Allergy Department; Hospital Clinico San Carlos, IdISSC; Madrid Spain
9. Section of Allergology; Department of Internal Medicine; Erasmus Medical Center; Otterdam the Netherlands
10. ALL-MED Medical Research Institute; Wroclaw Medical University; Wroclaw Poland
11. Department of Pediatric Pneumology and Immunology; Charité Universitätsmedizin; Berlin Germany
12. Department of Pediatrics; Allergy Unit; University of Messina; Messina Italy
13. Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
14. Center for Rhinology and Allergology; Wiesbaden Germany
15. Usher Institute of Population Health Sciences and Informatics; University of Edinburgh Medical School; Edinburgh UK
16. Department of Dermatology and Venerology; Medical University of Graz; Graz Austria
17. Outpatient Allergy Clinic Reumannplaz; Vienna Austria
18. Departments of Experimental Immunology and of Otorhinolaryngology; Academic Medical Center; University of Amsterdam; Amsterdam the Netherlands
19. Department of Paediatric and Adolescent Medicine, Respiratory and Allergic Disease Division; Medical University of Graz; Graz Austria
20. Upper Airways Research Laboratory and ENT-Department; University Hospital Ghent; Ghent Belgium
21. Allergy and Clinical Immunology; National Heart and Lung Institute; Imperial College London; London UK
22. Personalized Medicine Asthma & Allergy Clinic; Humanitas University and Research Hospital; Milano Italy
23. Danish Allergy Centre; University of Copenhagen; Copenhagen Denmark
24. Department for Pediatric Pneumology and Immunology; Charité Universitätsmedizin; Berlin Germany
25. Asthma UK Centre for Applied Research; Usher Institute of Population Health Sciences and Informatics; The University of Edinburgh; Edinburgh UK