1. Department of Neurology; Niigata National Hospital, National Hospital Organization; Kashiwazaki, Niigata Japan
2. Department of Neurology; Brain Research Institute, Niigata University Graduate School of Medicine; Niigata Japan
3. Department of Pediatrics; Niigata National Hospital, National Hospital Organization; Niigata Japan
4. Center for Integrated Human Science; Brain Research Institute, University of Niigata; Niigata Japan