Jiang, Guanglu
Wang, Guirong
Chen, Suting
Yu, Xia
Wang, Xiaobo
Zhao, Liping
Ma, Yifeng
Dong, Lingling
Huang, Hairong
Article History
Received: 30 July 2014
Accepted: 23 January 2015
First Online: 4 March 2015
Competing interests
: The authors declare no competing financial interests.