Meckmasin, Apichart, Anchana Prasartwit, and Surachai Silawan. 1994. “Output and Impact of Opisthorchiasis Control Programme in 5 Provinces of the Region 5, Thailand, 1994”. Journal of Health Science of Thailand 3 (3):181-94. https://thaidj.org/index.php/JHS/article/view/6592.