Gurusamy, U., R. Thangavelu, and C. Venkataswamy. “Abnormalities of the Umbilical Cord: Correlation With Placental Histology and Perinatal Outcome”. International Journal of Research in Medical Sciences, vol. 5, no. 11, Oct. 2017, pp. 5009-16, doi:10.18203/2320-6012.ijrms20174961.