1. Department of Rehabilitation Aikawa Clinic, Medical Corporation Yamaguchi Japan
2. Department of Communication Disorders, School of Rehabilitation Sciences Health Sciences University of Hokkaido Tobetsu Hokkaido Japan
3. Department of Neurology and Clinical Neuroscience Yamaguchi University Graduate School of Medicine Yamaguchi Japan
4. Department of Rehabilitation Medicine Hamamatsu City Rehabilitation Hospital Shizuoka Japan
5. Aikawa Clinic, Medical Corporation Yamaguchi Japan