1. Department of Biochemistry; Faculty of Medicine; Khon Kaen University; Khon Kaen 40002 Thailand
2. Liver Fluke and Cholangiocarcinoma Research Center; Khon Kaen University; Khon Kaen Thailand
3. Center for Research; Development of Medical Diagnostic Laboratories; Faculty of Associated Medical Science; Khon Kaen University; Khon Kaen Thailand
4. Department of Surgery; Faculty of Medicine; Khon Kaen University; Khon Kaen Thailand
5. Department of Pathology; Faculty of Medicine; Khon Kaen University; Khon Kaen Thailand
6. Division of Molecular Pathology; Institute of Medical Science; The University of Tokyo; Tokyo Japan