1. Clinic and Polyclinic for Dermatology and Allergology; University of Munich; Germany
2. Department of Dermatology; University of Tübingen; Germany
3. Department of Dermatology; Venereology, and Allergology; University of Frankfurt/Main; Germany
4. Center for Dermatology; Allergology, and Surgical Dermatology; Helios Clinic Wuppertal; Germany
5. University Eye Hospital; University of Tübingen; Germany
6. Dermatology Practice; Römerstraße 4, 82205 Gilching; Germany