Sur, B., Misra, S. and Dash, S. 2017. Evaluation of the anterior cervical angle of the uterus to predict spontaneous preterm birth. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 6, 6 (May 2017), 2323–2327. DOI:https://doi.org/10.18203/2320-1770.ijrcog20172114.