Du, Haifeng
Liang, Dong
Jin, Chiming
Kong, Lingyao
Stolt, Matthew J.
Ning, Wei
Yang, Jiyong
Xing, Ying
Wang, Jian
Che, Renchao
Zang, Jiadong
Jin, Song
Zhang, Yuheng
Tian, Mingliang
Article History
Received: 25 November 2014
Accepted: 25 May 2015
First Online: 6 July 2015
Competing interests
: The authors declare no competing financial interests.