1. Faculty of Public Health and The Research and Training Center for Enhancing Quality of Life of Working-age People, Khon Kaen University, Khon Kaen, Thailand
2. Faculty of Public Health and Research and Training Center for Enhancing Quality of Life for Working Age People, Khon Kaen University, Khon Kaen, Thailand
3. Faculty of Economics, Thammasat University, Bangkok, Thailand
4. Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
5. Sirindhorn College of Public Health, Khon Kaen, Thailand