Waywa, Duangdao, Saowaluk Silpasakorn, Athit Phungthaisong, and Yupin Suputtamongkol. 2006. “Intestinal Parasitic Infections in Thai Patients: Five-Year Experiences at Siriraj Hospital”. Siriraj Medical Journal 58 (11):1107-9. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246002.