1. Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
2. Department of Clinical Research, the Medical and Pharmacological Research Center Foundation, Hakui, Japan, Division of Nuclear Medicine, Department of Radiology, Saitama Medical University Hospital, Saitama, Japan
3. Department of Neurology, Showa University School of Medicine
4. Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan