Silsirivanit, Atit, Siriporn Proungvitaya, Kanlayanee Sawanyawisuth, Chaisiri Wongkham, and Sopit Wongkham. 2013. “Biomarkers in Bile Duct Cancers: Current Status”. Srinagarind Medical Journal 27 (August):405-12. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11166.