Min Cheol Chang1, Ming-Yen Hsiao2, Mathieu Boudier-Revéret3. 1. Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Daegu, Republic of Korea. 2. Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan. 3. Department of Physical Medicine and Rehabilitation, University of Montreal Health Center, Montreal, Canada.