1. Department of Dermatology Medical University of Vienna Vienna Austria
2. Third Faculty of Medicine Charles University Prague Czech Republic
3. FRCPath The Rotherham NHA Foundation Trust Rotherham United Kingdom
4. Department of Dermatology and Venerology Helios Klinikum Krefeld Krefeld Germany
5. Hospital Saint Louis Université de Paris Paris France
6. Department of Clinical Immunology and Transfusion Medicine Department of Biomedical and Clinical Sciences Linköping University Linköping Sweden
7. Onco‐Hematology Department Hautepierre Hospital Strasbourg France
8. Dermatology Department University of Brescia Italy Brescia Italy
9. FRCP St John’s Institution of Dermatology Guy’s and St Thomas’ NHS Foundation Trust London United Kingdom
10. Department of Dermatology University Hospital München Germany
11. Translational and Clinical Research Institute Newcastle University Great North Children's Hospital Newcastle upon Tyne Newcastle University Newcastle upon Tyne United Kingdom
12. Division of Dermatology University of Alberta Edmonton Canada
13. Department Dermatology & Venereology Otto‐von‐Guericke University Magdeburg Germany
14. Faculty of Biology and Medicine University of Lausanne and Department of Dermatology Lausanne University Hospital CHUV Lausanne Switzerland
15. Department of Thoracic Surgery Medical University Vienna Vienna Austria
16. Hautklinik Städtisches Klinikum Karlsruhe Karlsruhe Germany
17. Crown Princess Victoria Children’s Hospital and Division of Pediatrics Department of Biomedical and Clinical Sciences University Hospital Linköping University Linköping Sweden
18. National and Kapodistrian University of Athens Athens Greece
19. University Hospital Birmingham Birmingham United Kingdom
20. Department of Dermatology University Clinics Schleswig‐Holstein Kiel Germany
21. University Clinic for Dermatology Johannes Wesling Medical Centre UKRUB University of Bochum Minden Germany
22. Department of Dermatology Medical University of Graz Graz Austria
23. Vanderbilt University Medical Center Department of Dermatology Nashville Tennessee USA
24. Departments of Dermatology, Venereology, Allergology and Immunology Dessau Medical Center Brandenburg Medical School Theodor Fontane Dessau Germany
25. Department of Cardiac Surgery Medical University of Vienna Vienna Austria
26. LKH‐Univ. Klinikum Graz Division of Haematology Medical University of Graz Graz Austria