1. Department of Legal Medicine, Faculty of Medicine, University of Toyama, Toyama, Japan
2. Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
3. Department of Dementia and Higher Brain Function, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
4. Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan