Dong, Haifeng
Liu, Conghui
Ye, Haitao
Hu, Linping
Fugetsu, Bunshi
Dai, Wenhao
Cao, Yu
Qi, Xueqiang
Lu, Huiting
Zhang, Xueji
Article History
Received: 23 July 2015
Accepted: 30 October 2015
First Online: 7 December 2015
Competing interests
: The authors declare no competing financial interests.