Liao, Mingzhi
Wang, Guangyu
Quan, Baoku
Qi, Xingsi
Yu, Zhihui
Feng, Rennan
Zhang, Liangcai
Jiang, Yongshuai
Zhang, Yanqiao
Liu, Guiyou
Article History
Received: 12 August 2014
Accepted: 24 December 2014
First Online: 22 January 2015
Competing interests
: The authors declare no competing financial interests.