Sung Ho Jang1, Jun Lee1, Hyeok Gyu Kwon2. 1. From the Departments of Physical Medicine and Rehabilitation (S.H.J., H.G.K.) and Neurology (J.L.), College of Medicine, Yeungnam University, Daegu, Republic of Korea. 2. From the Departments of Physical Medicine and Rehabilitation (S.H.J., H.G.K.) and Neurology (J.L.), College of Medicine, Yeungnam University, Daegu, Republic of Korea. khg0715@hanmail.net.