1. Institute for Health Services Research in Dermatology and Nursing (IVDP) University Medical Center Hamburg‐Eppendorf (UKE) Hamburg Germany
2. Dermatologikum Berlin and SCIderm Research Institute Hamburg Germany
3. Comprehensive Center for Inflammation Medicine University Hospital Schleswig‐Holstein Campus Lübeck Lübeck Germany
4. Department of Dermatology and Venereology Geneva University Hospitals Geneva Switzerland
5. Department of Dermatology University Medical Center Schleswig‐Holstein Campus Kiel Kiel Germany