1. Department of Clinical Microbiology and Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.
2. Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.
3. Faculty of Medical Technology, Nakhon Ratchasima College, Nakhon Ratchasima, Thailand.
4. Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
5. Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand.