1. Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Thailand
2. Department of Physiotherapy, Faculty of Associated Medical Sciences, Khon Kaen University: Khon Kaen, Thailand
3. Department of Medicine, Faculty of Medicine, Khon Kaen University, Thailand
4. The Research and Training Center for Enhancing Quality of Life of Working-Age People, Khon Kaen University, Thailand