Shao, Yong
Wang, Li-Jun
Zhong, Li
Hong, Mei-Ling
Chen, Hong-Man
Murphy, Robert W.
Wu, Dong-Dong
Zhang, Ya-Ping
Che, Jing
Article History
Received: 29 June 2015
Accepted: 30 October 2015
First Online: 1 December 2015
Competing interests
: The authors declare no competing financial interests.