1. Department of Obstetrics and Gynaecology, Università Cattolica del Sacro Cuore, Rome, Italy,
2. Department of Obstetrics and Gynaecology, Università Cattolica del Sacro Cuore, Rome, Italy
3. Department of Obstetrics and Gynaecology, Università Cattolica del Sacro Cuore, Rome, Italy, OASI Institute for Research, Troina, Italy