Chang, Long
Jiang, Xiaoshun
Hua, Shiyue
Yang, Chao
Wen, Jianming
Jiang, Liang http://orcid.org/0000-0002-0000-9342
Li, Guanyu
Wang, Guanzhong
Xiao, Min
Article History
Received: 28 January 2014
Accepted: 10 May 2014
First Online: 22 June 2014
Competing interests
: The authors declare no competing financial interests.