Quan, Tingwei
Zhou, Hang
Li, Jing
Li, Shiwei
Li, Anan
Li, Yuxin
Lv, Xiaohua
Luo, Qingming http://orcid.org/0000-0002-6725-9311
Gong, Hui
Zeng, Shaoqun
Article History
Received: 21 December 2014
Accepted: 22 October 2015
First Online: 23 November 2015
Competing interests
: The authors declare no competing financial interests.