1. Department of Neurology, Aomori Prefectural Central Hospital, Japan
2. Department of Neuropathology, Institute of Brain Science, Hirosaki University Graduate School of Medicine, Japan
3. Department of Pathology, Aomori Prefectural Central Hospital, Japan
4. Department of Neurology, Aomori Rosai Hospital, Japan
5. Department of Anatomic Pathology, Hirosaki University Graduate School of Medicine, Japan