1. Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
2. Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan
3. Department of Biomedical Laboratory Sciences, Shinshu University School of Health Sciences, Matsumoto, Japan
4. Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
5. Jisenkai Brain Imaging Research Center, Matsumoto, Japan
6. Internal Medicine, Maruko Central Hospital, Nakamaruko, Japan
7. Department of Cardiovascular Medicine, Shinshu University School of Medicine, Matsumoto, Japan