1. Department of Neuropathology; Institute of Brain Science; Hirosaki University Graduate School of Medicine; Hirosaki Japan
2. Department of Pathology; Aomori Prefectural Central Hospital; Aomori Japan
3. Department of Pathological Neuroscience; Center for Bioresource-based Researches; University of Niigata; Niigata Japan
4. Department of Pathology; Brain Research Institute; University of Niigata; Niigata Japan