1. Department of Skin Diseases University Hospital Münster
2. University Hospital Essen
3. University Hospital Erlangen
4. University Hospital Zurich
5. Hospital Rudolfstiftung Vienna
6. Dermatological Practice Dr. Jungkunz
7. University Hospital Schleswig‐Holstein Campus Lübeck
8. University of Witten/Herdecke
9. University Hospital Ulm
10. University Hospital Greifswald
11. Sigmund Freud Private University
12. University Hospital Hamburg‐Eppendorf
13. University Hospital Tübingen
14. University Hospital Halle (Saale)