Wichitthongchai, C. and Lowirakorn, S. (2013) “ Khon Kaen University”., Srinagarind Medical Journal, 28(2), pp. 220–228. available at: https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11059 (accessed: 17 September 2026).