1. Do Neurology Clinic, Willis Medical Network, Daegu, Korea.
2. Deptartment of Neurology, Brain Science and Engineering Institute, Kyungpook National University School of Medicine, Daegu, Korea.
3. Willis Hospital, Willis Medical Network, Busan, Korea.
4. Department of Neurology, Sung Ae Hospital, Seoul, Korea.
5. Jeil Neurology Clinic, Willis Medical Network, Daejeon, Korea.