1. Department of Neuropathology; Hirosaki University Graduate School of Medicine; Hirosaki
2. Department of Neurology and Neurobiology of Ageing; Kanazawa University Graduate School of Medical Science; Kanazawa
3. Department of Pathological Neuroscience; Center for Bioresource-based Researches
4. Department of Pathology; Brain Research Institute; University of Niigata; Niigata
5. Department of Neurology; Hokkaido University Graduate School of Medicine; Sapporo Japan