Poopedi, Machuene, Shane Norris, and John Pettifor. “Is Vitamin D Status Associated With Non-Communicable Disease Risk in Children? A Cohort Study”. South African Journal of Clinical Nutrition 35, no. 3 (August 26, 2022): 88-93. Accessed December 22, 2024. http://sajcn.co.za/index.php/SAJCN/article/view/1614.