1. Allergy Unit; Regional University Hospital of Malaga-IBIMA-UMA; Malaga Spain
2. Department of Immunology and Allergy; Ankara University School of Medicine; Ankara Turkey
3. Regional Adult Cystic Fibrosis Unit; St James's Hospital; Leeds UK
4. University Children's hospital; Medical Faculty University of Belgrade; Belgrade Serbia
5. Dermatology and Allergology Department; Tenon Hospital (AP-HP); Sorbonne Universities; UPMC University Paris 06; Paris France
6. Allergology; University Hospital Basel; Basel Switzerland
7. Allergy Service; Infanta Leonor University Hospital; Madrid Spain
8. Department of Dermatology and Allergy Biederstein; Technische Universität München; Munich Germany
9. Pediatric allergy unit; Geneva University Hospital; Geneva Switzerland
10. Department of Allergy and Immunology; Hospital de S João; University School of Medicine; Porto Portugal
11. Division of Allergy; Department of Pulmonology; Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Montpellier France
12. UMRS 1136; Equipe - EPAR - IPLESP; Sorbonne Universités; UPMC Univ Paris 06; Paris France
13. Allergy Clinic; Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
14. Department of Dermatology and Allergology; RWTH Aachen University; Aachen Germany
15. Allergy and Immunology Clinic; Royal Liverpool and Broadgreen University Hospitals; Liverpool UK
16. Allergy Unit; Presidio Columbus; Rome Italy