Kong, Huihui
Zhang, Qianyi
Gu, Chunyang
Shi, Jianzhong
Deng, Guohua
Ma, Shujie
Liu, Jinxiong
Chen, Pucheng
Guan, Yuntao
Jiang, Yongping
Chen, Hualan
Article History
Received: 19 January 2015
Accepted: 19 May 2015
First Online: 10 June 2015
Competing interests
: The authors declare no competing financial interests.