1. Department of Rehabilitation Yamagata Prefectural Central Hospital Yamagata Japan
2. Department of Clinical Neuroscience Yamagata University Graduate School of Medicine Yamagata Japan
3. Division of Neurology Department of Internal Medicine III Faculty of Medicine Yamagata University Yamagata Japan
4. Department of Behavioral Neurology and Cognitive Neuroscience Tohoku University Graduate School of Medicine Sendai Japan