1 Department of Dermatology, University Hospital Erlangen, 91054 Erlangen, Germany.
2 Department of Pathology, University of Erlangen-Nürnberg, 91054 Erlangen, Germany.
3 1] Department of Pathology, University of Erlangen-Nürnberg, 91054 Erlangen, Germany [2] Experimental Tumor Pathology, Department of Pathology, University of Erlangen-Nürnberg, 91054 Erlangen, Germany.