1. Department of Neurology; Brain Research Institute, Niigata University; Niigata Japan
2. Department of Pathology; Brain Research Institute, Niigata University; Niigata Japan
3. Department of Neurology; Nagaoka Red Cross Hospital; Nagaoka Japan
4. Department of Neurology; Niigata National Hospital, National Hospital Organization; Kashiwazaki Japan
5. Department of Neurology; Nagasaki Kita Hospital; Nagasaki Japan