1. Institute for Health Services Research in Dermatology and Nursing (IVDP) University Medical Center Hamburg‐Eppendorf (UKE) Hamburg Germany
2. Dermatological Practice Tibarg Hamburg Germany
3. Department of Dermatology Elbe Kliniken Buxtehude Buxtehude Germany
4. Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) University of Osnabrück Osnabrück Germany