1. Department of Neurology Graduate School of Medical Sciences University of Yamanashi Yamanashi Japan
2. Department of Neurology Graduate School of Medicine The University of Tokyo Tokyo Japan
3. Division of Neurology Department of Internal Medicine Jichi Medical University School of Medicine Tochigi Japan
4. Department of Neurology Jichi Medical University Saitama Medical Center Omiya Japan
5. Department of Neurology Toranomon Hospital Tokyo Japan
6. Department of Biochemistry Graduate School of Medical Sciences University of Yamanashi Yamanashi Japan
7. Department of Molecular Neurology Graduate School of Medicine University of Tokyo Tokyo Japan
8. Department of Neurology International University of Health and Welfare Chiba Japan