1. Department of Dermatology; University Hospital; Tübingen Germany
2. Dermatologicum Hamburg; Germany
3. Department of Dermatology and Venereology; University Hospital; Graz Austria
4. Institute for Pathology; General Pathology; and Anatomic Pathology; Tübingen Germany
5. Dermatopathology Practice Friedrichshafen/Lake Constance; Friedrichshafen Germany
6. Department of Dermatology and Venereology; University Hospital; since 2014 HKS - Hautärzte Köln Süd; Dermatology Practice. Cologne; Cologne Germany
7. Department of Dermatology; University Hospital; Münster Germany
8. Dermatological Practice am Tibarg; Hamburg Germany
9. Department of Dermatology; Venereology; Allergology, and Phlebology; Johannes Wesling Hospital; Minden Germany
10. Department of Dermatology; Venereology; and Allergolgy; HELIOS Hospital; Hildesheim Germany