1. Department of Rehabilitation Sciences, Division of Speech-Language-Hearing Therapy, School of Health Sciences, Hirosaki University of Health and Welfare, Hirosaki, Aomori, Japan
2. Department of Social Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
3. Department of Neurology, Gunma University Hospital, Maebashi, Japan
4. Department of Neurology, Dementia Research Center, Geriatrics Research Institute and Hospital, Maebashi, Japan
5. Department of Neurology, Hirosaki National Hospital, Hirosaki, Japan
6. Center of Innovation Research Initiatives Organization, Hirosaki University, Hirosaki, Aomori, Japan
7. Department of Stress Response Science, Hirosaki University Graduate School of Medicine, Hirosaki, Japan