1. Section of Allergy and Clinical Immunology; Imperial College London; National Heart and Lung Institute; Royal Brompton Hospital; London UK
2. Allergy Department; Complejo Hospitalario Universitario de Santiago; Santiago de Compostela Spain
3. Allergy Section; Hospital Infantil Universitario Niño Jesús; Madrid Spain
4. Service d'Allergologie; Centre de l'Asthme et des Allergies; Hôpital d'Enfants Armand-Trousseau (APHP)-Sorbonne Universités; UPMC Univ Paris 06; UMR-S 1136; Institut Pierre Louis d'Epidémiologie et de Santé Publique; Equipe EPAR; Paris France
5. Center for Rhinology and Allergology; Wiesbaden Germany
6. Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
7. Allergy Department; Complejo Hospitalario de Navarra; Pamplona Spain
8. Allergy Management Unit; Hospital del Tórax; Complejo Hospital Universitario Nuestra Señora de Candelaria; Santa Cruz de Tenerife Spain
9. Ear, Nose and Throat Practice; Lutherstadt, Eisleben Germany
10. Allergy Section; Hospital General Universitario; Ciudad Real Spain
11. Allergy Center; Kassel Germany
12. Otorhinolaryngology and Allergology Center Schorndorf-Nord; Schorndorf Germany
13. Allergology and Immunology Clinique; University Claude Bernard; Lyon France
14. Medical Practitioner; Compiègne France
15. Département de Pneumologie et Addictologie; Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Sorbonne Universités; UPMC Paris 06; UMR-S 1136; Institut Pierre Louis d'Epidémiologie et de Santé Publique; Equipe EPAR; Paris France