Li, Chunfeng
Wu, Aiping
Peng, Yousong
Wang, Jingfeng
Guo, Yang
Chen, Zhigao
Zhang, Hong
Wang, Yongqiang
Dong, Jiuhong
Wang, Lulan
Qin, F. Xiao-Feng
Cheng, Genhong
Deng, Tao
Jiang, Taijiao
Article History
Received: 22 August 2014
Accepted: 3 November 2014
First Online: 26 November 2014
Competing interests
: The authors declare no competing financial interests.