Vijitsoonthronkul, K., Y. Sawangdee, A. Chamratrithirong, and W. Pau-in. “The Changes of Premature Mortality in Thailand Between 1997 and 2006”. Journal of Health Research, vol. 25, no. 2, Mar. 2017, pp. 69-75, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/80057.