Theerapongpakdee, Sunchai, Waraporn Chuai-In, and Kritsana Sumreth. “KKU Coaxial Circle Circuit”. Srinagarind Medical Journal 3, no. 3 (November 11, 2013): 157–163. accessed January 8, 2026. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13456.