Chatsantiprapa, K., and S. Ussanawarong. “Differnces in Pattern of Poisoning Between the Three Major Amphurs in Khon Kaen Province”. Srinagarind Medical Journal, vol. 9, no. 3, Nov. 2013, pp. 124-8, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13757.