1. Epidemiology Unit, Faculty of Medicine, Prince of Songkla University
2. Medical Oncology Unit, Department of Medicine, Faculty of Medicine, Khon Kaen University
3. Department of Surgery, Khon Kaen University
4. Department of Pathology, Faculty of Medicine, Khon Kaen University
5. Department of Radiology, Faculty of Medicine, Khon Kaen University
6. Cancer Unit, Srinagarind Hospital, Faculty of Medicine, Khon Kaen University
7. School of Public Health, University of Michigan
8. Department of Pediatrics, Faculty of Medicine, Khon Kaen University