Afroze, K. H., Subash, L., & H., A. S. (2018). Antenatal sonographic assessment of cross sectional area of umbilical cord components and its reference value in normal pregnancy. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 7(10), 3924–3930. https://doi.org/10.18203/2320-1770.ijrcog20183851