1 Department of Dermatology and Allergology, University Hospital, LMU Munich, Munich, Germany.
2 Department of Dermatology, Uniklinikum Erlangen, Comprehensive Cancer Center Erlangen - EMN, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.
3 Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany.
4 Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany.
5 Department of Dermatology, National Center for Tumor Diseases (NCT), Heidelberg University Hospital, Heidelberg, Germany.
6 Department of Dermatology, Allergology and Venerology, University Medical Center, Leipzig, Germany.
7 Department of Dermatology, Hospital Dortmund, Dortmund, Germany.
8 Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, Florida, USA.
9 Department of Dermatology, Johannes Wesling Medical Center, Ruhr University Bochum Campus Minden, Minden, Germany.