Tannugoal, Patraporn, Jetnipit Sommart, and Pimsiri Auiwattanakul. 2021. “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 10 (1), 6-14. https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/242575.