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 October 2, 2025. https://www.banglajol.info/index.php/DSHJ/article/view/49690.