- Correspondence to Professor Xiu-Ping Yu, Institute of Pathogenic Biology, Shandong University School of Medicine, Jinan, Shandong 250012, PR China; ; or Dr Chuan-Ju Liu, Department of Orthopaedic Surgery, New York University School of Medicine, 301 East 17th Street, New York, NY 10003, USA;
- Received March 4, 2013
- Revised June 20, 2013
- Accepted July 24, 2013
- First published August 8, 2013.
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