Affiliation: | 1Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand.2ASEAN Cancer Epidemiology and Prevention Research Group (ACEP), Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand.3Cancer Unit, Srinagarind Hospital, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.4Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.5Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. |