Xiao, Chuan-Xing
Xiao, Jing-Jing
Xu, Hong-Zhi
Wang, Huan-Huan
Chen, Xu
Liu, Yuan-Sheng
Li, Ping
Shi, Ying
Nie, Yong-Zhan
Li, Shao
Wu, Kai-Chun
Liu, Zhan-Ju
Ren, Jian-Lin
Guleng, Bayasi
Article History
Received: 6 November 2014
Accepted: 23 April 2015
First Online: 22 May 2015
Competing interests
: The authors declare no competing financial interests.