Paudel, S, B Lohani, G Gurung, MA Ansari, and P Kayastha. 2011. “Reference Values for Doppler Indices of the Umbilical and Fetal Middle Cerebral Arteries in Uncomplicated Third Trimester Pregnancy”. Journal of Institute of Medicine Nepal 32 (3):5-13. https://nepjol.info./index.php/JIOM/article/view/4953.