Khaomuangnoi, Jirawit, Thiti Pamornsinlapathum, Arak Phadungwitthayakorn, and Asani Pamarapa. 2016. “Results and Predictive Factors for Survival of Periampullary Cancer Patients at Uttaradit Hospital”. The Thai Journal of Surgery 37 (4):133-41. https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/224660.