1. Clinical Cooperation Unit Dermato-Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
2. Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
3. Department of General Surgery, University of Heidelberg, Germany
4. Department of General and Abdominal Surgery, Sana Klinikum Offenbach, Offenbach, Germany
5. Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany
6. German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany