Saowapawong, K. . ., R. . Panriansaen, and S. . . Karnjanakit. “A Development Model of Thailand to Become the Health Tourism Centre of Asia”. Academic Journal of Thailand National Sports University, vol. 10, no. 1, Jan. 2018, pp. 191-00, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/249223.