EP23.17: A multivariable decision model based on maternal and fetal sonographic variables for the prediction of a spontaneous vaginal delivery in the term nulliparous parturient before the onset of labour. (30th September 2019) - Gilboa, Y.; Achiron, R.; Kivilevitch, Z.; Kassif, E.; Messing, B.; Bardin, R.; Perlman, S.