1. Division of Obstetrics and Gynaecology, Cesare Magati Hospital, Scandiano, 42019 Reggio Emilia, Italy
2. Department of Pathology, Santa Maria Nuova Hospital, 42123 Reggio Emilia, Italy
3. Oncology Unit, Division of Obstetrics and Gynecology, University of Modena and Reggio Emilia, 41124 Modena, Italy