Sun, J. Q.
Cheng, X. http://orcid.org/0000-0003-2837-7136
Ding, M. D.
Guo, Y.
Priest, E. R.
Parnell, C. E.
Edwards, S. J.
Zhang, J.
Chen, P. F.
Fang, C.
Article History
Received: 15 January 2015
Accepted: 22 May 2015
First Online: 26 June 2015
Competing interests
: The authors declare no competing financial interests.