1. Division of Medical Oncology, Department of Medicine, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
2. Department of Biomedical Science, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
3. Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
4. Department of Surgery, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
5. Department of Pathology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand