1. Department of Dermatology Skin Cancer Center Ruhr‐University Bochum BochumGermany
2. National Reference Center for Papilloma‐ and Polyomaviruses Institute of Virology University of Cologne CologneGermany
3. Department of Dermatology Translational Skin Cancer ResearchGerman Cancer Consortium (DKTK) Partner Site Essen/DüsseldorfUniversity Duisburg‐Essen EssenGermany
4. Deutsches Krebsforschungszentrum (DKFZ) Heidelberg Germany