Piyawajanusorn, Chayanit, Suyanee Thongchot, Yingpinyapat Kittirat, Watcharin Loilome, Attapol Titapun, and Nisana Namwat. 2018. “Cellular Senescence Protein p16INK4a of Cancer-Associated Fibroblasts (CAFs) As a Prognostic Indicator for Cholangiocarcinoma Patients”. Srinagarind Medical Journal 33 (5):108-13. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/137105.