Bosman, Marelize, Ebrahim Hoosen, and Joseph Degiovanni. “Safety and Efficacy of Percutaneous Closure of Perimembranous Ventricular Septal Defects in Children: Review of the Results at Inkosi Albert Luthuli Central Hospital”. SA Heart Journal 16, no. 1 (April 23, 2019): 14–20. Accessed October 8, 2025. https://www.journals.ac.za/SAHJ/article/view/3407.