- Correspondence to Dr Nobutaka Hattori, Department of Neurology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan;
- Received October 10, 2014
- Revised January 26, 2015
- Accepted March 6, 2015
- First published March 20, 2015.
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