1. Department of Neurology, National Hospital Organization Higashi-ohmi General Medical Center, Higashi-ohmi, Shiga, Japan2Division of Neurology, Department of Internal Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
2. Division of Neurology, Department of Internal Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
3. Department of Neurology, National Hospital Organization Higashi-ohmi General Medical Center, Higashi-ohmi, Shiga, Japan
4. Department of Internal Medicine, Yabase Chuo Hospital, Kusatsu, Shiga, Japan
5. Department of Neurology, Nagano Red Cross Hospital, Nagano, Japan
6. Department of Legal Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
7. Division of Pathology and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Shiga, Japan
8. Departments of Oncology and Space Environmental Medicine, Kagoshima University Graduate School of Medical and Dental Science, Kagoshima, Kagoshima, Japan