1. Asthma UK Centre for Applied Research; Usher Institute of Population Health Sciences and Informatics; The University of Edinburgh Medical School; Edinburgh UK
2. Allergy Section; Department of Internal Medicine; Erasmus MC; Rotterdam The Netherlands
3. GPwSI in Allergy; Department of Clinical Immunology and Allergy; Northern General Hospital; Sheffield UK
4. Section for Health Services Research; Department of Public Health; University of Copenhagen; Copenhagen K Denmark
5. Senior Lecturer in Pharmacy Practice; Faculty of Life Sciences; School of Pharmacy and Medical Sciences; University of Bradford; Bradford UK
6. Allergy Section; Department of Internal Medicine; Hospital Vall d'Hebron; Barcelona Spain
7. Allergy Department and Faculty of Medicine; Complejo Hospitalario Universitario de Santiago; Santiago de Compostela University; Santigo Spain
8. Head of Clinical Services, Allergy UK; Planwell House; LEFA Business Park; Sidcup Kent UK
9. Faculty of Medicine; Department of Allergy and Clinical Immunology; Transylvania University Brasov; Brasov Romania
10. Allergy Unit; Department of Pediatrics; University of Messina; Messina Italy
11. Department of Pediatric Pneumology and Immunology; Charité Universitätsmedizin; Berlin Germany
12. Allergy Department; Hospital Clinico San Carlos; IdISSC; Madrid Spain
13. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
14. Wroclaw Medical University; ALL-MED Medical Research Institute; Wrocław Poland
15. Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
16. Center for Rhinology and Allergology; Wiesbaden Germany
17. The David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Newport Isle of Wight UK
18. NIHR Respiratory Biomedical Research Unit; University Hospital Southampton NHS Foundation Trust; Southampton UK
19. Faculty of Medicine; University of Southampton; Southampton UK
20. Department of Dermatology and Venerology; Medical University of Graz; Graz Austria
21. Outpatient Allergy Clinic Reumannplatz; Vienna Austria
22. Department of Paediatric and Adolescent Medicine; Respiratory and Allergic Disease Division; Medical University of Graz; Graz Austria
23. Departments of Experimental Immunology and of Otorhinolaryngology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
24. Department of Mother and Child Health; The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region; University of Padua; Padua Italy