Xie, Xiang-Qun
Yang, Peng
Zhang, Yu
Zhang, Peng
Wang, Liping
Ding, Yahui
Yang, Ming
Tong, Qin
Cheng, Haizi
Ji, Qing
McGuire, Terence
Yuan, Weiping
Cheng, Tao
Gao, Yingdai
Article History
Received: 21 August 2015
Accepted: 12 November 2015
First Online: 18 December 2015
Competing interests
: The authors declare no competing financial interests.