Ifra Saeed , Iram Iqbal , Rehmah Sarfaraz , Khadija Qamar ,Shadab Ahmed Butt,Saffia Shaukat. 2012. “Histomorphological Changes in Placentae of Pre- Eclamptic Mothers With Reference to Vasculosyncytial Membrane Thickness and Syncytial Knot Formation”. Journal of Rawalpindi Medical College 16 (1). https://journalrmc.com/index.php/JRMC/article/view/623.