Somu, Keerthi, Sujatha B. S., Shripad Hebbar, Shyamala G., and Muralidhar V. Pai. 2019. “Sonographic Assessment of Fetal Head Deflexion Using Occiput: Spine Angle Measured During First Stage of Labour and Its Role in Predicting the Mode of Delivery Among Nulliparous Women”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 8 (8):3025-30. https://doi.org/10.18203/2320-1770.ijrcog20193147.