1. Department of Gynecology, Obstetrics and Gynecological Oncology, Bethesda Hospital, Academic Teaching Hospital, Duisburg, Germany
2. Clinic of Gynecology, Obstetrics and Gynecological Oncology, University Hospital for Gynecology, Pius-Hospital Oldenburg, Medical Campus University of Oldenburg, Germany
3. 1st Department of Obstetrics & Gynecology, “Papageorgiou” General Hospital, Aristotle University and Centre for Endoscopic Surgery “Diavalkaniko” Hospital, Thessaloniki, Greece