1. Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;
2. Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;
3. Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;
4. Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;
5. Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand