1. Department of Dermatology Medical University of Vienna Vienna Austria
2. Department of Dermatology and Venereology University Hospital Essen, University Duisburg‐Essen Essen Germany
3. Department of Surgery, Klinik Favoriten Vienna Healthcare Group Vienna Austria
4. Department of Dermatology, Venereology and Allergology, Helios St. Elisabeth Hospital Oberhausen University of Witten/Herdecke Oberhausen Germany
5. Division of Clinical Virology, Department of Laboratory Medicine Medical University Vienna Vienna Austria