1. Department of Surgical Sciences, Institute of Gynaecology and Obstetrics, University of Cagliari, Cagliari, Italy;
2. Genetic Laboratory, Forensics Institute, Azienda Ospedaliero Universitaria, Cagliari, Italy;
3. Department of Obstetrics and Gynecology, Hippokratio Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece;
4. Department of Medical and Surgical Sciences, Institute of Obstetrics and Gynaecology, University of Foggia, Foggia, Italy;
5. Division of Gynecology and Obstetrics, Ospedale S. Francesco, Nuoro, Italy