1. Department of Nutrition and Dietetics; Harokopio University; Athens Greece
2. Département de Pneumologie et Addictologie; Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Montpellier France
3. UPMC Paris 06; UMR-S 1136; IPLESP; Equipe EPAR; Sorbonne Universités; Paris France
4. Allergy Unit; Department of Internal Medicine; University Hospital; Ancona Italy
5. Department of Internal Medicine; Section of Allergology; Erasmus MC; Rotterdam The Netherlands
6. Center for Rhinology and Allergology; Wiesbaden Germany
7. Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
8. Department of Dermatology and Venerology; Medical University of Graz; Graz Austria
9. Allergy Section; Children's University Hospital “Niño Jesús”; Madrid Spain
10. Centre for Respiratory Medicine and Allergy; University Hospital of South Manchester; The University of Manchester; Manchester Academic Health Science Centre; Manchester UK
11. Department of Internal Medicine, Allergy and Clinical Immunology; Medical University of Silesia; Katowice Poland
12. Allergy Outpatient Clinic; 401 General Military Hospital of Athens; Athens Greece
13. Department of Dermatology and Allergology; Ludwig-Maximilians University; Munich Germany
14. Department of Lung Diseases and Clinical Allergology; University of Turku; Turku Finland
15. Allergy Department; 2nd Pediatric Clinic; University of Athens; Athens Greece
16. Center for Pediatrics & Child Health; Institute of Human Development; University of Manchester; Manchester UK
17. Section of Allergy and Clinical Immunology; Imperial College London; National Heart and Lung Institute and Royal Brompton Hospital NHS; London UK