Taher, Md Abu, Nuzhat Tasmin, AS Mohiuddin, Md Mohit Ul Alam, Md Mofazzal Sharif, and Kona Ghos. 2012. “Doppler Flow Velocity Indices (RI, PI, S/D & PSV) of Fetal Middle Cerebral Artery in Normal Pregnancies: Correlation With Gestational Age of 20 to 40 Weeks”. BIRDEM Medical Journal 2 (2):77-80. https://doi.org/10.3329/birdem.v2i2.12306.