Wang, Shang
Dong, Hailiang
Hou, Weiguo
Jiang, Hongchen
Huang, Qiuyuan
Briggs, Brandon R.
Huang, Liuqin
Article History
Received: 30 July 2014
Accepted: 25 November 2014
First Online: 19 December 2014
Competing interests
: The authors declare no competing financial interests.