1 Department of Dermatology, Dresden University Hospital and Medical Faculty Carl Gustav Carus, Technical University of Dresden, Dresden, Germany. National Center for Tumor Diseases (NCT), Dresden, Germany.
2 Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
3 Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN), Erlangen, Germany.