1. Allergy Section; Department of Internal Medicine; Hospital Universitari Vall d'Hebron; Barcelona Spain
2. UPMC Paris 06, UMR-S 1136, IPLESP, Equipe EPAR; Département de Pneumologie et Addictologie; Hôpital Arnaud de Villeneuve; CHRU de Montpellier and Sorbonnes Universités; Paris France
3. Section on Child and Adolescent Allergology; Women's and Children's Health; Academic Hospital; University of Uppsala; Uppsala Sweden
4. Department of Immunology and Allergic Diseases; Kirikkale University Hospital; Kirikkale Turkey
5. Centre for Rhinology and Allergology; Wiesbaden Germany
6. Food Allergy Referral Centre Veneto Region; Department of Women and Child Health; Padua General University Hospital; Padua Italy
7. Department of Otorhinolaryngology; Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
8. Clinic of Allergy and Asthma; Medical University; Sofia Bulgaria
9. Department of Respiratory Diseases and Allergy; Department of Clinical Medicine; Aarhus University; Aarhus C Denmark