Tan, Xiaoyue
Luo, Laima
Chen, Hongyu
Zhu, Xiaoyong
Zan, Xiang
Luo, Guangnan
Chen, Junling
Li, Ping
Cheng, Jigui
Liu, Dongping
Wu, Yucheng
Article History
Received: 12 February 2015
Accepted: 9 July 2015
First Online: 31 July 2015
Competing interests
: The authors declare no competing financial interests.