1. Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea.
2. Brain Tumor Clinic and Gamma Knife Center and Brain Tumor Research Laboratory, and Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea.