1. Department of Neurosurgery, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun, Korea.
2. Department of Pathology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun, Korea.
3. Department of Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun, Korea.