Marais, C., L. Van Wyk, M. Conradie, and D. Hall. “Screening for Gestational Diabetes: Examining a Breakfast Meal Test”. South African Journal of Clinical Nutrition, Vol. 29, no. 3, Apr. 2016, pp. 4-7, http://sajcn.co.za/index.php/SAJCN/article/view/1075.