Zhang, Qiming
Li, Xiangping
Hossain, Md Muntasir
Xue, Yunzhou
Zhang, Jie
Song, Jingchao
Liu, Jingying
Turner, Mark D.
Fan, Shanhui
Bao, Qiaoliang
Gu, Min
Article History
Received: 30 May 2014
Accepted: 12 September 2014
First Online: 9 October 2014
Competing interests
: The authors declare no competing financial interests.