Verma, S., Singh Meena, B., Pooja, P. and Narain Sehra, R. (2017) “A study of cervical length measured ultrasonographically in prediction of preterm delivery”, Obs Gyne Review: Journal of Obstetric and Gynecology, 3(4), pp. 38-43. doi: 10.17511/joog.2017.i04.02.