Sirikurnpiboon, Siripong, Supakade Surabenjawong, Viroj Laosunthornsiri, and Burin Awapittaya. 2012. “Retrospective Study on the Effect of Preoperative Versus Postoperative Chemoradiation for Rectal Carcinoma”. The Thai Journal of Surgery 33 (2). https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/226873.