P.13.13 DYNAMIC TRANSPERINEAL ULTRASOUND FOR THE EVALUATION OF PELVIC FLOOR DISORDERS: WHICH IS THE BEST POSITION?. (24th February 2016) - Ricchiuti, A.; Gambaccini, D.; Bolognesi, V.; Costa, F.; Mumolo, M.G.; Ricco, G.; Bertani, L.; Giusti, P.; De Bortoli, N.; Marchi, S.; Bellini, M.