1. Department of Neurology Graduate School of Medicine, Chiba University Chiba Japan
2. Department of Neurology Chibaken Saiseikai Narashino Hospital Narashino Japan
3. Department of Neurology Chiba Rosai Hospital Ichihara Japan
4. Department of Neurology Japanese Red Cross Narita Hospital Narita Japan
5. Division of Occupational Therapy, Department of Rehabilitation Chiba Prefectural University of Health Sciences Chiba Japan
6. Department of Radiology Chiba University Hospital Chiba Japan
7. Diagnostic Radiology and Radiation Oncology Graduate School of Medicine, Chiba University Chiba Japan