1. Department of Gynecology, Obstetrics and Gynecological Oncology, University Hospital for Gynecology, Pius-Hospital Oldenburg, Oldenburg, Germany
2. Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
3. Department of Public Health, University of Naples “Federico II”, Naples, Italy
4. St. George’s Medical School, Nicosia University, Aretaeio Hospital, Nicosia, Cyprus
5. Department of Obstetrics and Gynecology, Goethe University Frankfurt, Frankfurt, Germany