Xing, Yingshou
Xia, Yang
Kendrick, Keith
Liu, Xiuxiu
Wang, Maosen
Wu, Dan
Yang, Hua
Jing, Wei
Guo, Daqing
Yao, Dezhong
Article History
Received: 18 August 2015
Accepted: 25 November 2015
First Online: 21 January 2016
Competing interests
: The authors declare no competing financial interests.