1. Department of Dermatology and VenereologyUniversity of CologneFaculty of Medicine and University Hospital Cologne Cologne Germany
2. Lübeck Institute of Experimental Dermatology (LIED)University of Lübeck Lübeck Germany
3. Department of DermatologyUniversity of Lübeck Lübeck Germany
4. Department of DermatologyUniversity Medical Center Mainz Mainz Germany
5. Department of DermatologyVenereology and AllergologyUniversity HospitalGoethe‐University Frankfurt Germany
6. Department of DermatologyHeidelberg University Hospital Heidelberg Germany
7. Department of Dermatology and AllergologyUniversity Medical Center Gießen (UKGM)Justus Liebig UniversityGiessenGermany and Allergy Research GroupDepartment of DermatologyMedical Center – University of Freiburg Freiburg Germany
8. Dermatological AllergologyAllergie‐Centrum‐CharitéDepartment of DermatologyVenereology and AllergologyCharité – Universitätsmedizin Berlin
9. Department of DermatologyUniversity Hospital Erlangen Erlangen Germany
10. Department of DermatologyUniversity Hospital Münster Münster Germany
11. Department of DermatologyUniversity Hospital of Regensburg Regensburg Germany
12. Hautzentrum Regensburg Regensburg Germany
13. Department of Dermatology and AllergologyCarl Gustav Carus University Hospital Dresden Germany
14. Chair and Institute of Environmental MedicineUNIKA‐TTechnical University of Munich and Helmholtz Zentrum München Augsburg Germany
15. Department of DermatologyVenerology and AllergologyUniversity Hospital of Schleswig‐Holstein Campus Kiel Kiel Germany
16. Division of AllergyDepartment of Dermatologyand Department of BiomedicineUniversity of Basel Basel Switzerland
17. Department of DermatologyVenerology and AllergologyUniversity Hospital of Würzburg Würzburg Germany
18. Department of Dermatology and AllergyUniversity Hospital Bonn Bonn Germany
19. Department of Dermatology and AllergologyTechnical University of Munich Munich Germany
20. Department of DermatologyUniversity of Tuebingen Tuebingen Germany
21. Department of DermatologyUniversity Hospital Dusseldorf Dusseldorf Germany
22. Department of Dermatology and AllergologyUniversity Medical Center Marburg (UKGM) Marburg Germany
23. Department of DermatologyVenereology and AllergologyFederal Army Hospital Hamburg Germany
24. Techniker Krankenkasse Hamburg Germany