Affiliation: | 1. Department of Pathology, University of Niigata, , Niigata, Japan;2. Department of Neurosurgery, Nagaoka Chuo General Hospital, , Nagaoka, Japan;3. Department of Neurosurgery, Brain Research Institute, University of Niigata, , Niigata, Japan;4. Department of Pathology, Gunma University Hospital, , Japan;5. Department of Human Pathology, Gunma University Graduate School of Medicine, , Maebashi, Japan |