1. Danish Anaesthesia Allergy Centre, Allergy Clinic, Department of Dermatology and Allergy Copenhagen University Hospital Gentofte Denmark
2. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
3. Faculty of Medicine and Health Science, Department of Immunology – Allergology – Rheumatology Antwerp University Hospital, University of Antwerp Antwerp Belgium
4. Department of Anesthesia and Intensive Care Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, EA 3072, FMTS de Strasbourg Strasbourg France
5. Service d’Anesthésie‐Réanimation, Groupe Hospitalier de Paris‐Seine‐Saint‐Denis Assistance Publique‐Hôpitaux de Paris & Université Paris 13, Sorbonne Paris Cité Paris France
6. Immunology Department Manchester University NHS Foundation Trust Manchester UK
7. University Clinic of Respiratory and Allergic Diseases Golnik Slovenia
8. Allergy Unit, Allergo‐Anaesthesia Unit, Faculty of Medicine Hospital Central de la Cruz Roja, Alfonso X El Sabio University, ARADyAL Madrid Spain
9. Allergy Unit, Département de Pneumologie et Addictologie, Hôpital Arnaud de Villeneuve University Hospital of Montpellier Montpellier France
10. Sorbonnes Universités, UPMC Paris 06, UMR‐S 1136, IPLESP, Equipe EPAR Paris France
11. Department of ENT and DPAC AUMCAmsterdam University Medical Center Amsterdam The Netherlands
12. Allergy Unit Policlinic Hospital San Martino Genoa Italy
13. Allergy Unit, Department of Dermatology, University Hospital University of Basel Basel Switzerland