1. Department of Public Health; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
2. Evidence-Based Health Care Ltd; Edinburgh UK
3. Institute for Health and Human Development; University of East London; London UK
4. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
5. Department of Mother and Child Health; The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region; University of Padua; Padua Italy
6. The David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Newport Isle of Wight UK
7. NIHR Respiratory Biomedical Research Unit; University Hospital Southampton NHS Foundation Trust; Southampton UK
8. Faculty of Medicine; University of Southampton; Southampton UK
9. Hospital Medica Sur; Mexico City Mexico
10. Section of Allergy and Clinical Immunology; National Heart and Lung Institute; Imperial College London; Royal Brompton Hospital; London UK
11. Division of Asthma, Allergy and Lung Biology; Department of Paediatric Allergy; MRC & Asthma Centre in Allergic Mechanisms of Asthma; King's College London; London UK
12. St Thomas NHS Foundation trust; London United Kingdom
13. Department of Allergy & Immunology; Hospital Quironsalud Bizkaia; Bilbao Spain
14. Allergy & Asthma Center Westend; Berlin Germany
15. Clinic for Pediatric Pneumonology and Immunology; Charité Medical University Berlin; Berlin Germany
16. Department for Ped Pneumology and Immunology; Charite; Berlin Germany
17. Department of Pediatrics; University of Messina; Messina Italy
18. Institute of Human Development; University of Manchester; Manchester UK
19. Allergy Department; 2nd Pediatric Clinic; University of Athens; Athens Greece
20. Department of Otorhinolaryngology, Head and Neck Surgery; Medical Faculty Mannheim; Universitätsmedizin Mannheim; Heidelberg University; Mannheim Germany
21. Center for Rhinology and Allergology; Wiesbaden Germany
22. University of Edinburgh; Edinburgh UK
23. Netherlands Anaphylaxis Networks; The Netherlands