Chandrachamnong, Punnawat. “Survival Analysis After Surgery of Colorectal Cancer in Vajira Hospital”. Vajira Medical Journal : Journal of Urban Medicine 65, no. 4 (August 30, 2021): 271–279. Accessed May 3, 2024. https://he02.tci-thaijo.org/index.php/VMED/article/view/247690.