- Correspondence to Dr Nobutake Sadamasa, Department of Neurosurgery, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki City, Okayama 710-8602, Japan;
- Received August 22, 2013
- Revised September 29, 2013
- Accepted October 1, 2013
- First published October 23, 2013.
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