Karnjanapiboonwong, Auttakiat, and Wachara Eamratsameekool. 2016. “Two-year Survival Outcomes among Patients with Cholangiocarcinoma Diagnosed during 2010 in Roi-et Province, Thailand”. Outbreak, Surveillance, Investigation & Response (OSIR) Journal 9 (3):1-6. https://doi.org/10.59096/osir.v9i3.263210.