1. Dermatology clinic; Bremserstr. 79 Ludwigshafen 67063 Germany
2. Dermatology Practice Münster; Windhorststr. 16 Münster 48143 Germany
3. Dermatology clinic; Heidelberger Landstr. 379 Darmstadt 64297 Germany
4. Dermatology clinic; University of Greifswald; Ferdinand-Sauerbruchstr. Greifswald 17475 Germany