GUPTA, A.; KUMAR, M.; ANAND, T. Role of oral sildenafil in neonates with persistent pulmonary hypertension of newborn. International Journal of Contemporary Pediatrics, [S. l.], v. 6, n. 5, p. 2222–2224, 2019. DOI: 10.18203/2349-3291.ijcp20193757. Disponível em: https://www.ijpediatrics.com/index.php/ijcp/article/view/2650. Acesso em: 26 mar. 2026.