Pundir, S., N. Namdeo, and S. Jain. “Examination of the Relation of Localization of Placenta at 18-24 Weeks of Gestation by Ultrasonography With the Development of Preeclampsia Later in Pregnancy”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 11, Oct. 2020, pp. 4567-73, doi:10.18203/2320-1770.ijrcog20204812.