1. Allergy‐Centre‐CharitéCharité ‐ Universitätsmedizin Berlin10117BerlinGermany
2. Asthma and Allergy Research GroupDepartment of Respiratory Medicine and AllergologySahlgrenska University HospitalGöteborgSweden
3. Chest Diseases DepartmentStrasbourg University HospitalFederation of Translational MedicineUniversity of StrasbourgStrasbourgFrance
4. Allergy ClinicGentofte University HospitalCopenhagenDenmark
5. Stallergenes S.AAntonyFrance