1. Department of Internal Medicine (Neurology), Kudanzaka Hospital, Japan
2. Department of Neurology and Neurological Science, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences, Japan
3. Department of Pathology, Brain Research Institute, Niigata University, Japan
4. Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
5. Department of Neurology, Nagaoka Red Cross Hospital, Japan
6. Department of Pathology, Nagaoka Red Cross Hospital, Japan
7. Department of Neurology, Japan Community Health Care Organization Kobe Central Hospital, Japan