Vinitchagoon, T., J. Prasobtham, Y. Poomsutas, and P. Surapat. “A Narrative Review of Nutrition and Dietetics in Older Adults”. Journal of Nutrition Association of Thailand, vol. 55, no. 1, Mar. 2020, pp. 41-52, https://he01.tci-thaijo.org/index.php/JNAT/article/view/221172.