1. Maternal and Child Department, Obstetrics and Gynecology Unit, Cannizzaro Hospital, Catania, Italy
2. Department of Obstetrics and Gynecology, “Giovanni Paolo II” Hospital, Ragusa, Italy
3. Organ Transplant Unit, University Hospital of Catania, Catania, Italy
4. Division of Obstetrics and Gynecology, Department of General Surgery and Medical-Surgical Specialism, University of Catania, P.O. “G Rodolico”, Catania, Italy