1. Gynecologic and Obstetric Clinic, Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
2. Institute of Infection diseases, Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
3. Institute of Urology, Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
4. Orthopedic and Traumatological Center, University-Hospital, Sassari Italy