Pratap, C. and Thakur, S. 2018. Prediction of pre-eclampsia in early pregnancy using PAPP-A and uterine artery pulsatility index. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 7, 12 (Nov. 2018), 5005–5010. DOI:https://doi.org/10.18203/2320-1770.ijrcog20184956.