Varghese, S., Kour, G., Manchanda, K., & Dhar, T. (2017). Abnormal umbilical artery Doppler in third trimester and perinatal outcome: a retrospective study. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 5(7), 2196–2199. https://doi.org/10.18203/2320-1770.ijrcog20162092