Sujjanun, A., and P. Thitasut. “Studies on Metacercaria of Opisthorchis Spp. In Chiang Mai, Thailand”. Journal of Associated Medical Sciences, vol. 4, no. 3, Jan. 2015, p. 113, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60685.