1. Department of Dermatology, University Hospital Essen University of Duisburg‐Essen Essen Germany
2. German Cancer Consortium (DKTK) Heidelberg Germany
3. Department of Dermatology, Faculty of Medicine and University Hospital Carl Gustav Carus Skin Cancer Center at the University Cancer Centre and National Center for Tumor Diseases, Technical University Dresden Dresden Germany
4. Institute of Human Genetics University Medical Center Hamburg‐Eppendorf Hamburg Germany
5. Clinic and Polyclinic for Dermatology and Allergology University Hospital Bonn Bonn Germany