1. Department of Neurology, Jeonbuk National University Medical School and Hospital, Jeonju, Korea.
2. Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
3. Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Medical Genetic Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Department of Neurology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University Medical College, Seoul, Korea.
6. Department of Neurology, Kyungpook National University Hospital, Daegu, Korea.
7. Department of Neurology, Chungnam National University Hospital, Daejeon, Korea.
8. Department of Neurology, Kangwon National University Hospital, Chuncheon, Korea.
9. Department of Neurology, Wonkwang University School of Medicine, Iksan, Korea.