1. J. Wannapakhe, PT, PhD, School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.
2. P. Arayawichanon, MD, School of Rehabilitation Medicine, Faculty of Medicine, Khon Kaen University.
3. J. Saengsuwan, NU, PhD, Faculty of Public Health, Khon Kaen University.
4. S. Amatachaya, PT, PhD, School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, 40002 Thailand.