1 Department of Dermatology and Allergology, Philipps-Universität Marburg, Marburg, Germany; Department of Dermatology, University of Pisa, Pisa, Italy.
2 Department of Dermatology and Allergology, Philipps-Universität Marburg, Marburg, Germany; Department of Dermatology, Venereology and Allergology, Charité Medical University of Berlin, Berlin, Germany.
3 Department of Dermatology and Allergology, Philipps-Universität Marburg, Marburg, Germany.
4 Department of Dermatology, Venereology and Allergology, University Medical Center, Georg August University, Göttingen, Germany.
5 Department of Dermatology and Allergology, Philipps-Universität Marburg, Marburg, Germany. Electronic address: wpfuetzn@med.uni-marburg.de.