1. Department of Dermatology Venereology and Allergology University Medical Center Göttingen Germany
2. Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen Germany
3. Department of Dermatology University Medical Center Erlangen Deutsches Zentrum Immuntherapie Friedrich Alexander University Erlangen‐Nürnberg Germany
4. Department of Dermatology and Allergy Biederstein Technical University Munich Germany
5. Department of Medicine Solna Unit of Dermatology and Venereology Karolinska Institutet Stockholm Sweden
6. ZAUM – Center of Allergy and Environment Technical University and Helmholtz Center Munich Germany
7. Department of Dermatology Venereology and Allergology Charité – University Medical Center Berlin Germany
8. Department of Dermatology Venereology and Allergology University Hospital Würzburg Germany
9. Lübeck Institute of Experimental Dermatology University of Lübeck Germany
10. Department of Dermatology University Medical Center Heidelberg Germany
11. Department of Dermatology Inselspital University Medical Center Bern Switzerland
12. Department of Dermatology Medical University of Vienna Austria
13. Department of Dermatology University Hospital Cologne Germany
14. Department of Dermatology Westfälische Wilhelms University Münster Germany