[1] Khon Kaen Univ, Fac Med, Dept Biochem, Liver Fluke & Cholangiocarcinoma Res Ctr, Khon Kaen 40002, Thailand
[2] Khon Kaen Univ, Fac Med, Dept Parasitol, Res & Diagnost Ctr Emerging Infect Dis, Khon Kaen 40002, Thailand
[3] Mahidol Univ, Fac Trop Med, Appl Malacol Ctr, Dept Social & Environm Med, Bangkok 10400, Thailand