1. Department of Dermatology and Allergy Gentofte Hospital Hellerup Denmark
2. Section of Dermatology and Venereology University of Verona Verona Italy
3. Department of Dermatology University Hospital Germans Trias i Pujol Autonomous University of Barcelona (UAB) Badalona Spain
4. Dermatology Centre Salford Royal NHS Foundation Trust Manchester NIHR Biomedical Research Centre The University of Manchester Manchester UK
5. Psoriasis‐Center at the Department of Dermatology University Medical Center Schleswig‐Holstein Kiel Germany