1. Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
2. Jisenkai Brain Imaging Research Center, Matsumoto, Japan
3. Department of Neurology, JA Nagano Koseiren Kakeyu Misayama Rehabilitation Center Kakeyu Hospital, Matsumoto, Japan
4. Department of Biomedical Laboratory Sciences, Shinshu University School of Health Sciences, Matsumoto, Japan
5. Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan