1 Department of Neurology, Jeonbuk National University Hospital, Jeonju, Korea.
2 Department of Neurology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
3 Institute for Molecular Biology and Genetics and Department of Chemistry, Jeonbuk National University, Jeonju, Korea.
4 Department of Neurology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea. hgkang@jbnu.ac.kr.