1. Department of Mother and Child Health; Padua General University Hospital; Padua Italy
2. David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Isle of Wight UK
3. NIHR Respiratory Biomedical Research Unit; University Hospital Southampton NHS Foundation Trust; Southampton UK
4. Human Development in Health and Clinical and Experimental Sciences Academic Units; University of Southampton Faculty of Medicine; Southampton UK
5. Allergy-Center-Charité; Department of Dermatology and Allergy; Charité Universitätsmedizin Berlin; Berlin Germany
6. Allergy Unit; Department of Internal Medicine; University Hospital; Ospedali Riuniti; Ancona Italy
7. Department of Dermatology and Allergy, Biederstein; Technische Universität München; Munich Germany
8. Allergy Department; Hospital Clinico San Carlos; IdISSC; Madrid Spain
9. Division of Asthma, Allergy & Lung Biology; Department of Pediatric Allergy; King's College London; London UK
10. MRC & Asthma UK Centre in Allergic Mechanisms of Asthma; London UK
11. Immunoallergology Department; Coimbra University Hospital; Coimbra Portugal
12. European Society for Emergency Medicine and Emergency Department; Faculty of Medicine; University Hospital; Rennes France
13. Department of Pediatric, Pneumology and Immunology; Charité, Universitatsmedizin Berlin; Berlin Germany
14. Department of Dermatology and Allergy Centre; Odense University Hospital; Odense Denmark
15. Allergy Section; Department of Internal Medicine; Hospital Universitari Vall d'Hebron; Barcelona Spain
16. Allergy Section; Department of Medicine; University of Cambridge; Cambridge UK
17. Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Montpellier France
18. Department of Pediatric Pulmonology and Pediatric Allergy; University of Groningen; University Medical Center Groningen; Groningen The Netherlands
19. GRIAC Research Institute; University of Groningen; University Medical Center Groningen; Groningen the Netherlands
20. Department of Paediatrics and Child Health; University College; Cork Ireland
21. University Hospitals of Geneva; Geneva Switzerland
22. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
23. Anaphylaxis Canada; Toronto Canada
24. Wroclaw Medical University; Wroclaw Poland
25. University Hospital Charité; Berlin Germany
26. Department of Dermatology and Allergology; Ludwig-Maximilians-Universität; München Germany
27. Nederlands Anafylaxis Netwerk - European Anaphylaxis Taskforce; Dordrecht The Netherlands
28. Department of Pediatric Respiratory Medicine and Allergy; Emma Children's Hospital; Academic Medical Center; University of Amsterdam; Amsterdam the Netherlands
29. Department of Dermatology and Allergy; Hannover Medical School; Hannover Germany
30. Evidence-Based Health Care Ltd; Edinburgh UK
31. Swiss Institute of Allergy and Asthma Research (SIAF); University of Zurich; Davos Switzerland
32. Allergy & Respiratory Research Group; Centre for Population Health Sciences; The University of Edinburgh; Edinburgh UK