Tannugoal, P. ., J. . Sommart, and P. . Auiwattanakul. “Relationship between health perception and smartphone usage behavior among high school students in a high school in Khon Kaen province”. UBRU Journal for Public Health Research, vol. 10, no. 1, May 2021, pp. 6-14, https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/242575.