- Correspondence to Professor N Hattori, Department of Neurology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan;
- Received August 16, 2011
- Revised November 6, 2011
- Accepted November 9, 2011
- First published December 3, 2011.
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