1. Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand;
2. Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;
3. Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand