Jetwarapong, O., O. Laosee, and A. Mongkolchati. “Determinants of Cognitive Impairment Among Adults 50 Years and Older in Thailand”. Interdisciplinary Research Review, vol. 14, no. 5, Nov. 2019, pp. 18-24, https://ph02.tci-thaijo.org/index.php/jtir/article/view/224971.