Saridogan, E., and O. Moraloglu Tekin. “The Usefulness of Intrapartum Transperineal Ultrasonography for the Prediction of Mode of Delivery”. Gynecology Obstetrics &Amp; Reproductive Medicine, vol. 27, no. 2, Aug. 2021, pp. 116-22, doi:10.21613/GORM.2020.1031.