Hou, Weiguo
Dong, Hailiang
Li, Gaoyuan
Yang, Jian
Coolen, Marco J. L.
Liu, Xingqi
Wang, Shang
Jiang, Hongchen
Wu, Xia
Xiao, Haiyi
Lian, Bin
Wan, Yunyang
Article History
Received: 28 March 2014
Accepted: 8 August 2014
First Online: 17 October 2014
Competing interests
: The authors declare no competing financial interests.