Jiang, Hui
Ye, Jun
Hu, Peng
Wei, Fengxia
Du, Kezhao
Wang, Ning
Ba, Te
Feng, Shuanglong
Kloc, Christian
Article History
Received: 17 July 2014
Accepted: 2 December 2014
First Online: 19 December 2014
Competing interests
: The authors declare no competing financial interests.