1. Department of Pathology; Brain Research Institute, Niigata University; Niigata Japan
2. Department of Medical Technology, Graduate School of Health Sciences; Niigata University; Niigata Japan
3. Department of Hematology; Niigata City General Hospital; Niigata Japan
4. Department of Neurology; Niigata City General Hospital; Niigata Japan
5. Department of Pathology; Niigata City General Hospital; Niigata Japan
6. Department of Neurology; Brain Research Institute, Niigata University; Niigata Japan