van Niekerk, S.-M., K. Grimmer, and Q. Louw. “The Prevalence of Underweight, Overweight and Obesity in a Multiracial Group of Urban Adolescent Schoolchildren in the Cape Metropole Area of Cape Town”. South African Journal of Clinical Nutrition, Vol. 27, no. 1, Oct. 2013, pp. 18-24, http://sajcn.co.za/index.php/SAJCN/article/view/778.