1. Department of Dermatology Aarhus University Hospital Aarhus Denmark
2. Department of Dermatology and Allergy Ludwig‐Maximilian University Munich Germany
3. Hautklinik Thalkirchner Straße Staedtisches Klinikum Muenchen Muenchen Germany
4. Department of Dermatology CHU Nantes Nantes France
5. Pediatric Dermatology Unit Departments of Dermatology and Pediatrics Lausanne University Hospital Lausanne Switzerland
6. Department of Dermatology Amsterdam Public Health, Infection and Immunity Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
7. St. Johns Institute of Dermatology Kings College and Guy's and St Thomas’ NHS Foundation Trust London UK
8. Department of Dermatology, Venereology and Allergology Medical University of Gdansk Gdansk Poland
9. Department of Dermatology Lund University Malmoe Sweden
10. Department of dermatology INSERM University of Bordeaux Bordeaux France
11. Department of Dermatology Larrey Hospital Toulouse University Toulouse France
12. Department of Dermatology and Allergology, and Christine Kühne‐Center for Allergy Research and Education University of Bonn Bonn Germany
13. Department of Dermatology and Allergology Hannover Medical School Hannover Germany
14. Department of Dermatology, Venerology and Allergology University Medical Center Schleswig‐Holstein Kiel Germany
15. Department of Dermatology and Allergology Biederstein Technical University of Munich Munich Germany
16. Department of Dermatology Justus‐Liebig‐University Giessen Germany
17. Sheffield Dermatology Research Department of Infection, Immunity & Cardiovascular Disease University of Sheffield Sheffield UK
18. Department of Dermatology UZ Brussel Free University of Brussels (VUB) Brussels Belgium
19. Dermatologikum Hamburg Germany
20. Department of Dermatology Inselspital Bern University Hospital University of Bern Bern Switzerland
21. Department of Dermatology National Medical University Kiev Ukraine
22. Department of Dermatology Erasmus MC University Medical Center Rotterdam The Netherlands
23. Department of Pediatric Dermatology Ospedale Maggiore Policlinico University of Milan Milano Italy
24. Christiane‐Kühne Center for Allergy Research and Education (CK‐Care) Davos Switzerland
25. Department of Dermatology and Allergology University Medical Center Utrecht Utrecht The Netherlands
26. Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Hellerup Denmark