Vorster, H, F Raal, J Ubbink, A Marais, M Rajput, and F Ntanios. “Functional Foods With Added Plant Sterols for Treatment of Hypercholesterolaemia and Prevention of Ischaemic Heart Disease”. South African Journal of Clinical Nutrition (1). Accessed April 29, 2024. http://www.sajcn.co.za/index.php/SAJCN/article/view/54.