1. Tropical Medicine Graduate Program, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
2. Tropical Disease Research Center, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
3. Department of Bacteriology National Institute of Hygiene and Epidemiology Hanoi Vietnam
4. Department of Pathology, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
5. Department of Radiology, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
6. Institute of Infection, Veterinary and Ecological Sciences, Faculty of Health and Life Sciences University of Liverpool Liverpool UK