Hyung Lee1,2, Ji-Yun Park3, Hyun Ah Kim4,5. 1. Department of Neurology, Keimyung University School of Medicine, 1095, Dalgubeol-daero, Dalseo-gu, Daegu, 42601, Republic of Korea. 2. Brain Research Institute, Keimyung University School of Medicine, Daegu, Republic of Korea. 3. Department of Neurology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea. 4. Department of Neurology, Keimyung University School of Medicine, 1095, Dalgubeol-daero, Dalseo-gu, Daegu, 42601, Republic of Korea. kha0206@dsmc.or.kr. 5. Brain Research Institute, Keimyung University School of Medicine, Daegu, Republic of Korea. kha0206@dsmc.or.kr.