1. Department of Behavioral Neurology & Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Japan
2. Department of Neurology, South Miyagi Medical Center, Japan
3. Department of Neurology, Tohoku University Graduate School of Medicine, Japan
4. Department of Neuropsychiatry, Kochi Medical School, Japan
5. Deartment of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Japan