Chen, Hongbo
Zeng, Xiaobin
Gao, Chunmei
Ming, Pinghong
Zhang, Jianping
Guo, Caiping
Zhou, Lanzhen
Lu, Yin
Wang, Lijun
Huang, Laiqiang
He, Xiangjiu
Mei, Lin
Article History
Received: 30 December 2014
Accepted: 5 May 2015
First Online: 4 June 2015
Competing interests
: The authors declare no competing financial interests.