1. Department of Dermatology and Allergology University of Bonn Medical Center Bonn Germany
2. Department of Dermatology Allergy and Venerology Division of Allergy and Immunology, Charité Universitätsmedizin Berlin Germany
3. Department of Dermatology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
4. Department of Clinical Immunology Wroclaw Medical University Wroclaw Poland
5. ALL‐MED Medical Research Institute Wroclaw Poland
6. LETI Pharma GmbH Witten Germany
7. Department of Otorhinolaryngology Head and Neck Surgery Section of Rhinology and Allergy University Hospital Marburg Philipps‐Universität Marburg Marburg Germany