- Takeo Baba, MD, Department of Neurosurgery, Shinsapporo Neurosurgical Hospital, 1-2-1-10 Kaminopporo, Atsubetu-ku, Sapporo 004-0031, Japan;
- Received July 21, 2007
- Revised November 24, 2007
- Accepted November 28, 2007
- First published December 12, 2007.
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