Pariwattanasak, Jirasak. 2013. “Comparision of Early Postoperative Complications Between Urgent and Elective Hemorrhoidectomy in Prolapsed Thrombosed Hemorrhoid”. Srinagarind Medical Journal 26 (4):266-71. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/12972.