Singh, Poonam, Jaya Upadhyay, Kanhu Charan Digal, Yash Shrivastava, and Sriparna Basu. 2020. “Oral Sildenafil Therapy for the Management of Mild Persistent Pulmonary Hypertension of the Newborn in Term Neonates”. Indian Journal of Child Health 7 (10): 415-17. https://mansapublishers.com/ijch/article/view/2572.