- Correspondence to Dr Akira Kurata, Department of Neurosurgery, Kitasato University School of Medicine, 1-15-1, Minamaku, Sagamihara, Kanagawa, Japan;
- Received March 22, 2011
- Revised May 19, 2011
- Accepted May 20, 2011
- First published June 16, 2011.
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