Yuan, Yaxia
Li, Liqing
Zhu, Yanyan
Qi, Lei
Azizi, Latifeh
Hytönen, Vesa P.
Zhan, Chang-Guo
Huang, Cai
Article History
Received: 27 October 2016
Accepted: 4 January 2017
First Online: 3 February 2017
Competing interests
: The authors declare no competing financial interests.