1. Allergy Department; Hospital Clínico San Carlos; IdISSC; Madrid Spain
2. Clinical Epidemilogy Unit; Preventive Medicine Department; Hospital Clínico San Carlos; IdISSC; Madrid Spain
3. Institute of Food Research; Norwich Research Park; Colney Norwich UK
4. Allergy Unit; Department of Dermatology; University Hospital Zürich; Zürich Switzerland
5. Department of Immunology, Rheumatology and Allergy; Medical University of Lodz; Lodz Poland
6. Department of Allergy, Respiratory Medicine and Sleep; Landspitali University Hospital; Reykjavik Iceland
7. Allergy Department; Laiko General Hospital; Athens Greece
8. Department of Dermatology/Allergology; University Medical Center Utrecht; Utrecht The Netherlands
9. Division of Asthma and Allergy; Department of Chest Diseases; University Hospital; Strasbourg France
10. Clinical Centre of Allergology and Asthma; Medical University Sofia; Sofia Bulgaria
11. Ambulatorio di Allergologia; Clinica San Carlo; Paderno Dugnano Milano Italy
12. Department of Pediatrics; Faculty Hospital Bulovka; Charles University; Prague Czech Republic
13. Department of Clinical Immunology and Allergy; Central Manchester and Manchester Children's University Hospitals NHS Trust; Manchester UK
14. Allergy Centre; Vilnius University; Vilnius Lithuania
15. Thermo Fisher Scientific; Uppsala Sweden
16. Department of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
17. Department of Respiratory Epidemiology and Public Health; National Heart and Lung Institute; Imperial College London; London UK
18. Unilever Safety and Environmental Assurance Centre; Colworth Science Park; Sharnbrook Bedfordshire UK
19. VBC Genomics Biosciences Research GmbH; Vienna Austria
20. Division of Allergologie; Paul Ehrlich Institute; Langen Germany
21. Institute of Inflammation and Repair; Manchester Academic Health Science Centre; Manchester Institute of Biotechnology; The University of Manchester; Manchester UK
22. Department of Experimental Immunology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
23. Department of Otorhinolaryngology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands