1 Gynecologic and Obstetric Clinic, Dep. of Clinical and Experimental Medicine, University of Sassari, Italy; Urologic Clinic, Dep. of Clinical and Experimental Medicine, University of Sassari, Italy; Chronic Pelvic Pain Centre, Dep. of Obstetrics and Gynaecology, Ospedale S. Maria Della Speranza, Battipaglia, Italy. Electronic address: capobia@uniss.it.
2 Gynecologic and Obstetric Clinic, Dep. of Clinical and Experimental Medicine, University of Sassari, Italy; Urologic Clinic, Dep. of Clinical and Experimental Medicine, University of Sassari, Italy; Chronic Pelvic Pain Centre, Dep. of Obstetrics and Gynaecology, Ospedale S. Maria Della Speranza, Battipaglia, Italy.