Sultana, Sohely, et al. “Duplex Color Doppler Study of Uterine Artery in Early Diagnosis of Preeclampsia: Uterine Diastolic Notch and Preeclamsia”. Bangladesh Medical Research Council Bulletin, vol. 45, no. 1, June 2019, pp. 34-40, doi:10.3329/bmrcb.v45i1.41806.