Begum, Nasrin, and Roxana Ferdousi. “Study of Gross Anatomy of Human Placenta in Pregnancy Induced Hypertension”. Journal of Armed Forces Medical College, Bangladesh 10, no. 2 (December 31, 2015): 55-61. Accessed October 31, 2020. https://www.banglajol.info/index.php/JAFMC/article/view/25923.