Euanorasetr, C. ., and W. . Suwanthanma. “Stapled Hemorrhoidectomy: 6-Year Experience in Thai Patients”. The Thai Journal of Surgery, vol. 28, no. 2, June 2007, pp. 39-47, https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/241141.