Almarshud, S., and M. H. . Ali. “The Association Between Clinical Signs and Detection of Congenital Heart Disease by Echocardiography in Neonates: Systematic Review”. Journal of Neonatal Surgery, vol. 14, no. 32S, July 2025, pp. 6420-5, https://www.jneonatalsurg.com/index.php/jns/article/view/8578.