1. Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt, 10117 Berlin, Germany
2. Department of Dermatology, Universität zu Berlin, 10117 Berlin, Germany
3. Dermatology, Brown University, Providence, RI 02912, USA
4. Dermatology Department, Saint-Louis Hospital, AP-HP, 75010 Paris, France
5. Department of Medicine, Université Paris Cité, 75010 Paris, France