RAMESH, S; KUMUTHA, J. Role of perfusion index in pulse oximetry screening for critical congenital heart disease in neonates. Indian Journal of Child Health, [S. l.], v. 5, n. 3, p. 200–203, 2018. DOI: 10.32677/IJCH.2018.v05.i03.013. Disponível em: https://mansapublishers.com/ijch/article/view/796. Acesso em: 5 dec. 2025.