Rahman, M.; Mamun, M. A. A.; Chowdhury, M. A.; Munsi, A. S. Role of Sildenafil in the Treatment of Persistent Pulmonary Hypertension of Newborn (PPHN) - Should It Be Withdrawn from Market of Bangladesh Due to Threat of Being Misuses. Dhaka Shishu (Child) Hosp. J. 2020, 35, 100-104.