1. University Hospital, Department of Respiratory Diseases, Hôpital Arnaud de Villeneuve, Montpellier, France, and Inserm, CESP Centre for Research in Epidemiology and Population Health U1018, France
2. Allergy and Immunology Service, Hospital Quirón
Bizkaia Spain
3. Allergy and Respiratory Diseases Clinic, DIMI, University of Genoa
Genoa Italy
4. Department of Dermatology and Allergy, Allergy Centre Charité, Charité- Universitätsmedizin Berlin
Berlin Germany
5. Faculty of Medicine, Catholic University of Córdoba, Córdoba, Argentina and Faculty of Specialization – Respiratory Medicine, University of Genoa
Genoa Italy
6. Department of Oto-Rhino-Laryngology, Ghent University Hospital
Ghent Belgium
7. Faculty of Medicine, UFBA, and CNPq
Bahia Brazil
8. Faculty of Medicine, University of Nuevo León (UANL), Allergy and Clinical Immunology, Hospital Universitario
Monterrey México
9. Division of Internal Medicine, Asthma and Allergy, Berlicki University Hospital, Medical University of Lodz
Lódz Poland
10. Immunoallergy Department, CUF-Descobertas Hospital
Lisbon Portugal
11. Unitat de Rinologia & Clínica de l’Olfacte, Servei d’Otorinolaringologia. Immunoal.lèrgia Respiratòria Clínica i Experimental, IDIBAPS, CIBERES. Hospital Clínic. Barcelona Catalonia Spain
12. Woodbrook Medical Centre, Loughborough, and University of Aberdeen
Aberdeen UK
13. Allergy and Immunology Service, Clinica El Avila
Caracas Venezuela
14. Department of Clinic Research, FAES Farma
Bilbao Spain
15. Department of Dermatology and Allergy, Allergy Centre Charité, Charité-Universitätsmedizin Berlin, Berlin, Germany and University of Southampton UK