Wang, Yuesheng
Xiao, Ruijuan
Hu, Yong-Sheng http://orcid.org/0000-0002-8430-6474
Avdeev, Maxim http://orcid.org/0000-0003-2366-5809
Chen, Liquan
Article History
Received: 18 November 2014
Accepted: 18 March 2015
First Online: 24 April 2015
Competing interests
: The authors declare no competing financial interests.