1. Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
2. Health Service Center, Kanazawa University, Kanazawa, Japan
3. Department of Neurology, National Hospital Organization Iou Hospital, Kanazawa, Japan
4. Department of Neurology, Takaoka Koseiren Hospital, Takaoka, Japan
5. Department of Neurology, Showa University School of Medicine, Tokyo, Japan
6. Dementia Medical Center, Department of Neurology, and Institute for Clinical Research, National Hospital Organization Hokuriku Hospital, Nanto, Japan
7. Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa, Japan