Wang, Liren
Shao, Yanjiao
Guan, Yuting
Li, Liang
Wu, Lijuan
Chen, Fangrui
Liu, Meizhen
Chen, Huaqing
Ma, Yanlin
Ma, Xueyun
Liu, Mingyao
Li, Dali
Article History
Received: 22 June 2015
Accepted: 30 October 2015
First Online: 1 December 2015
Competing interests
: The authors declare no competing financial interests.