Affiliation: | 1. Department of Dermatology, Venereology and Allergology, HELIOS St. Elisabeth Hospital Oberhausen, , Oberhausen, Germany;2. Department of Dermatology, Allergology, and Surgical Dermatology, HELIOS Klinikum Wuppertal, University of Witten‐Herdecke, , Wuppertal, Germany |