1. Department of Neurology, Chonnam National University Hwasun Hospital, Hwasun, Korea.
2. Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, Korea.
3. Department of Pediatrics, Chonnam National University Hospital, Gwangju, Korea.
4. Department of Neurology, The Brain Korea 21 Project, Center for Biomedical Human Resources, Chonnam National University Medical School, Gwangju, Korea.