- Correspondence to Takatoshi Sorimachi, Department of Neurosurgery, Brain Research Institute, University of Niigata, 1-757, Asahimachidori, Chuo-ku, Niigata, 950-8585 Japan;
- Received May 14, 2010
- Revised July 6, 2010
- Accepted July 20, 2010
- First published December 16, 2010.
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