Thaewnongiew, K., Sithithaworn, P., Tangsawad, S., Singtong, S., Chudthaisong, N., & Tangkanakul, W. (2017). Incidence and Re-infection Rates of Opisthorchis viverrini in Upper Northeastern Communities of Thailand. Journal of Health Science of Thailand, 25(3), 370–379. Retrieved from https://www.thaidj.org/index.php/JHS/article/view/266