1. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
2. Investigational Unit; Hospital Medica Sur; Mexico City Mexico
3. The David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Newport Isle of Wight UK
4. NIHR Biomedical Research Centre; University Hospital Southampton; NHS Foundation Trust; Southampton UK
5. Faculty of Medicine; University of Southampton; Southampton UK
6. Section of Allergy and Clinical Immunology; Imperial College London; National Heart and Lung Institute; Royal Brompton Hospital; London UK
7. Department of Immunology and Allergy; Northern General Hospital; Sheffield UK
8. Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
9. Center for Rhinology and Allergology; Wiesbaden Germany
10. Usher Institute of Population Health Sciences and Informatics; University of Edinburgh; Edinburgh UK
11. Asthma UK Centre for Applied Research; The University of Edinburgh; Edinburgh UK
12. Department of Allergy and Clinical Immunology; Faculty of Medicine; Transylvania University Brasov; Brasov Romania
13. Department of Allergy & Immunology; Hospital Quironsalud Bizkaia; Erandio Spain
14. Department of Pediatrics; Allergy Unit; University of Messina; Messina Italy
15. Department for Pediatric Pneumology and Immunology; Charité Universitätsmedizin; Berlin Germany
16. Department of Paediatric Allergy; MRC & Asthma Centre in Allergic Mechanisms of Asthma; Division of Asthma, Allergy and Lung Biology; King's College London and Guy's & St Thomas’ Hospital NHS Foundation Trust; London UK
17. Allergy Department; Hospital Clinico San Carlos; IdISSC; Madrid Spain
18. Department of Internal Medicine; Section of Allergology; Erasmus Medical Center; Rotterdam The Netherlands
19. Department of Clinical Immunology; Wroclaw Medical University; Wroclaw Poland
20. ALL-MED Medical Research Institute; Wroclaw Poland
21. Allergy & Asthma Center Westend; Berlin Germany
22. Institute of Human Development; University of Manchester; Manchester UK
23. Allergy Department; 2nd Pediatric Clinic; University of Athens; Athens Greece
24. Department of Dermatology and Venerology; Medical University of Graz; Graz Austria
25. Outpatient Allergy Clinic Reumannplaz; Vienna Austria
26. Nederlands Anafylaxis Netwerk - European Anaphylaxis Taskforce; Dordrecht The Netherlands
27. Department of Experimental Immunology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
28. Department of Otorhinolaryngology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
29. Department of Pediatric and Adolescent Medicine; Respiratory and Allergic Disease Division; Medical University of Graz; Graz Austria
30. Department of Public Health; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
31. Evidence Based Health Care Ltd; Edinburgh UK
32. Food Allergy Referral Centre Veneto Region; Department of Woman and Child Health; Padua University Hospital