1. Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
2. Department of Physical Therapy, School of Health Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
3. Bishoen Geriatric Health Services Facility, Suzu, Japan
4. Department of Neurology, Ioh Hospital, National Hospital Organization, Kanazawa, Japan
5. Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan