1. Department of Neurology, Nippon Medical School, Tokyo, Japan
2. Department of Neurology, Nippon Medical School, 1-1-5, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
3. Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
4. Department of Japanese Oriental Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
5. Department of Clinical Research, NHO Nagasaki Kawatana Medical Center, Nagasaki, Japan
6. Department of Neurology, NHO Nagasaki Hospital, Nagasaki, Japan