Ke-Vin Chang1, Chen-Yu Hung2, Levent Özçakar3. 1. Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, BeiHu Branch, Taipei, Taiwan. 2. Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Chu-Tung Branch, Hsinchu, Taiwan. 3. Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey.