Masami Tanaka1,2,3, Masako Kinoshita4, Keiko Tanaka5. 1. 1 Kyoto MS Center, Kyoto Min-Iren Chuo Hospital, Kyoto, Japan. 2. 2 Department of Neurology, Kaikoukai Josai Hospital, Nagoya, Japan. 3. 3 Department of Neurology, School of Medicine, Fujita Health University, Toyoake, Japan. 4. 4 Department of Neurology, Utano National Hospital, Kyoto, Japan. 5. 5 Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan.