Kamsa-ard, S., S. Sriamporn Promthet, P. Sithithaworn, P. Vatanasapt, N. KhuntiKao, N. Pimchan, S. Kamsa-ard, and S. Wiangnon. “Predictive Statistical Model for the Risk of Cholangiocarcinoma in Northeast Thailand”. Srinagarind Medical Journal, vol. 24, no. 3, Nov. 2013, pp. 231-9, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13023.