Yang, X
Yang, P
Shen, J
Osaka, E
Choy, E
Cote, G
Harmon, D
Zhang, Z
Mankin, H
Hornicek, F J
Duan, Z
Article History
Received: 19 February 2014
Revised: 10 April 2014
Accepted: 14 April 2014
First Online: 22 May 2014
Competing interests
: The authors declare no conflict of interest.