Brown, S.C., A.D. Bruwer, and F.E. Smit. “Percutaneous Closure of Ventricular Septal Defects in Childhood”. SA Heart Journal 4, no. 1 (April 25, 2017): 26–31. Accessed March 11, 2026. https://www.journals.ac.za/index.php/SAHJ/article/view/2107.