Wu, N
Zhang, H
Deng, F
Li, R
Zhang, W
Chen, X
Wen, S
Wang, N
Zhang, J
Yin, L
Liao, Z
Zhang, Z
Zhang, Q
Yan, Z
Liu, W
Wu, D
Ye, J
Deng, Y
Yang, K
Luu, H H
Haydon, R C
He, T-C
Article History
Received: 20 December 2013
Revised: 13 March 2014
Accepted: 21 March 2014
First Online: 1 May 2014
Competing interests
: The authors declare no conflict of interest.