1. Department of Dermatology, University of Heidelberg, Heidelberg, Germany
2. Department of Dermatology and Venerology, Medical University of Graz, Graz, Austria
3. Department of Dermatology, Lyon Sud University Hospital, Hospices Civils de Lyon, Pierre Bénite, France
4. First Department of Dermatology, Aristotle University of Thessaloniki, Thessaloniki, Greece
5. Public, Private, and Teaching Practice, Konstanz, Germany
6. Department of Dermatology, Allergology and Environmental Medicine II, Klinik Thalkirchnerstraße, Munich, Germany