Zühlke, Liesl, and Balu Vaidyanathan. “Is It Time for Developing Countries to Adopt Neonatal Pulse Oximetry Screening for Critical Congenital Heart Disease?”. SA Heart Journal 10, no. 2 (March 31, 2017): 454–461. Accessed October 8, 2025. https://www.journals.ac.za/SAHJ/article/view/1805.