Li, Zhou
Wang, Yingfeng
Yao, Qiuming
Justice, Nicholas B.
Ahn, Tae-Hyuk
Xu, Dong
Hettich, Robert L.
Banfield, Jillian F.
Pan, Chongle
Article History
Received: 5 December 2013
Accepted: 16 June 2014
First Online: 25 July 2014
Competing interests
: The authors declare no competing financial interests.