Liu, Lihong
Liu, Haoran
Li, Shuo
Zhang, Xin
Zhang, Min
Zhu, Ning
Dufresne, Craig P.
Chen, Sixue
Wang, Qiaomei
Article History
Received: 1 June 2016
Accepted: 31 August 2016
First Online: 29 September 2016
Competing interests
: The authors declare no competing financial interests.