1. Department of Dermatology, Inselspital Bern University Hospital University of Bern Bern Switzerland
2. Centro Studi GISED Bergamo Italy
3. Graduate School for Cellular and Biomedical Sciences University of Bern Bern Switzerland
4. Department of Dermatology University Hospital Zurich Zurich Switzerland
5. Institute for Health Services Research in Dermatology and Nursing (IVDP) University Medical Center Hamburg‐Eppendorf (UKE) Hamburg Germany
6. Division of Dermatology and Venereology University Hospital of Geneva Geneva Switzerland
7. Department of Dermatology and Venereology Hôpital de Beaumont Lausanne University Hospital Center Lausanne Switzerland
8. Clinic of Dermatology and Allergology Cantonal Hospital St Gallen St Gallen Switzerland
9. Department of Dermatology and Allergy University Hospital LMU Munich Munich Germany
10. Department of Dermatology University Basel Hospital Basel Switzerland
11. Department of Immunology University Hospital Zurich Zurich Switzerland
12. Faculty of Medicine University of Zurich Zurich Switzerland
13. Department of Dermatology Regional Hospital Bellinzona Bellinzona Switzerland
14. Department of Dermatology Azienda USL 8 Berica ‐ San Bortolo Hospital Vicenza Italy
15. Department of Dermatology and Allergology Cantonal Hospital Aarau Aarau Switzerland