Manositisak, Parkpoom. “Incidence and Associated Factors of Negative Appendectomy in Kalasin Hospital”. Srinagarind Medical Journal 25, no. 3 (October 31, 2013): 223–227. Accessed April 28, 2024. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/12924.