Huang, Q
Tang, X
Wang, G
Fan, Y
Ray, L
Bergmann, A
Belenkaya, T Y
Ling, X
Yan, D
Lin, Y
Ye, X
Shi, W
Zhou, X
Lu, F
Qu, J
Lin, X
Article History
Received: 5 December 2012
Revised: 15 July 2014
Accepted: 15 July 2014
First Online: 22 August 2014
Competing interests
: The authors declare no conflict of interest.