Hong, Jinhua
Hu, Zhixin
Probert, Matt
Li, Kun
Lv, Danhui
Yang, Xinan
Gu, Lin
Mao, Nannan
Feng, Qingliang
Xie, Liming
Zhang, Jin
Wu, Dianzhong
Zhang, Zhiyong
Jin, Chuanhong
Ji, Wei
Zhang, Xixiang
Yuan, Jun
Zhang, Ze
Article History
Received: 31 August 2014
Accepted: 15 January 2015
First Online: 19 February 2015
Competing interests
: The authors declare no competing financial interests.