Suntornpong, N. ., K. . Muangsomboon, A. Methasate, V. . Veerasarn, and W. Boonnuch. “A Young Woman With Rectal Bleeding”. Siriraj Medical Journal, vol. 54, no. 7, July 2002, pp. 410-3, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245303.