Preinduction Sonographic Measurement of Cervical Length in Post-Term Nulliparous Women with Low Cervical Score: A Pilot Study - Greco, P; Scioscia, M; Vimercati, A; Cibelli, G; Rossi, A C; Nappi, L; Selvaggi, L (Geburtshilfe und Frauenheilkunde, 2005)