1. Department of Dermatology Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt Universität zu Berlin and Berlin Institute of Health Charitéplatz 1 10117 Berlin Germany
2. Courage + Khazaka Electronic GmbH Mathias‐Brüggen‐Straße 91 50829 Köln Germany
3. Beuth University of Applied Sciences Berlin Luxemburger Straße 10 13353 Berlin Germany