Affiliations

• ¹ Department and Clinic for Dermatology, Venereology and Allergology, University Hospital Saarland, Homburg.
• ² Department and Clinic for Radiation Therapy, University Hospital Saarland, Homburg.
• ³ Department of Dermatology, Venereology and Allergology, University Hospital Essen.
• ⁴ Specialized Hospital Münster-Hornheide, Münster.
• ⁵ Cooperative Unit Dermato-Oncology at the German Cancer Research Center Heidelberg (DKFZ) and the Department of Dermatology, Venereology and Allergology, Medical Faculty Mannheim, Ruprecht-Karls University Heidelberg.
• ⁶ Department and Clinif for Dermatology and Venereology, University Hospital Cologne.
• ⁷ Sarcoma Center, University of Heidelberg, University Hospital Mannheim.
• ⁸ Department of Dermatology, Venereology and Allergology, University Mainz.