Meschia M1, Pifarotti P2, Magatti F3, Bernasconi F4, Riva D5, Kojancic E6 1. Dept. Obstet Gynecol, Ospedale Fornaroli,Magenta, 2. Dept. Obstet Gynecol,University of Milan, 3. Dept. Obstet Gynecol, Ospedale Valduce, Como, 4. Dept. Obstet Gynecol, Ospedale Desio, 5. Dept. Obstet Gynecol, Ospedale Cantù, 6. Dept. Urology, University of Novara