Siriwittayakorn, Junjaree, and Boonlong Sivasomboon. “‘SERUM CAROTENE AND VITAMIN A LEVELS IN THAIS’”. Journal of Associated Medical Sciences 5, no. 2 (June 29, 2016): 85. Accessed May 24, 2024. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60720.