1Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
2Department of Paediatrics, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
4Researches and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/