Lyu, Hongming
Lu, Qi
Huang, Yilin
Ma, Teng
Zhang, Jinyu
Wu, Xiaoming
Yu, Zhiping
Ren, Wencai
Cheng, Hui-Ming
Wu, Huaqiang
Qian, He
Article History
Received: 29 October 2014
Accepted: 3 November 2015
First Online: 4 December 2015
Competing interests
: The authors declare no competing financial interests.