Wei, Feng MD; Liu, Xiaoguang MD; Liu, Zhongjun MD; Jiang, Liang MD; Dang, Gengting MD; Ma, Qingjun MD; Dang, Lei MD
From the Department of Orthopedics, Peking University Third Hospital, Beijing, China.
Acknowledgment date: August 20, 2009. First revision date: November 14, 2009. Second revision date: March 14, 2010. Acceptance date: May 4, 2010.
The device(s)/drug(s) is/are FDA-approved or approved by corresponding national agency for this indication.
No funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
The study was approved by the Ethics Committee of Peking University Health Center.
Address correspondence and reprint requests to Xiaoguang Liu, MD, Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, China; E-mail: [email protected]
