1. Department of Dermatology, Venereology and Allergology, University Hospital Frankfurt, Goethe University, 60596 Frankfurt, Germany
2. Department of Gynecology and Obstetrics, University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
3. Department of Dermatology, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany