Mamun, Mohammad Abdullah Al. “Sildenafil in the Management of Pulmonary Hypertension in Newborn”. Dhaka Shishu (Children) Hospital Journal 35, no. 2 (October 12, 2020): 94–99. Accessed November 21, 2024. https://banglajol.info/index.php/DSHJ/article/view/49690.