- Correspondence to: H-W Deng Departments of Orthopedic Surgery and Basic Medical Sciences, University of Missouri–Kansas City, 2411 Holmes Street, Room M3-C03, Kansas City, MO 64108-2792, USA;
- Received February 15, 2006
- Accepted May 1, 2006
- Revised April 21, 2006
- First published May 24, 2006.
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