1. Department of Pathology GROW‐School for Oncology and Developmental Biology Maastricht University Medical Center (MUMC+) Maastricht the Netherlands
2. Department of Epidemiology GROW School for Oncology and Developmental Biology Maastricht University Maastricht the Netherlands
3. Department for Translational Skin Cancer Research (TSCR) German Cancer Consortium (DKTK) University Hospital Essen Essen Germany
4. Deutsches Krebsforschungsinstitut (DKFZ) Heidelberg Germany
5. Department of Dermatology Ruhr‐University Bochum Bochum Germany
6. Laboratory of Dermatology Department of Oncology and Department of Dermatology University Hospitals LeuvenUniversity of Leuven KUL Leuven Belgium
7. Department of Pathology University Hospitals of LeuvenUniversity of Leuven KUL Leuven Belgium
8. Laboratory Translational Cell and Tissue Research University of Leuven, KU Leuven Belgium