Wang, Fan http://orcid.org/0000-0001-7403-3305
Wen, Shihui http://orcid.org/0000-0002-4670-4658
He, Hao
Wang, Baoming
Zhou, Zhiguang http://orcid.org/0000-0002-9648-1325
Shimoni, Olga
Jin, Dayong http://orcid.org/0000-0003-1046-2666
Article History
Received: 8 November 2017
Revised: 6 January 2018
Accepted: 15 January 2018
First Online: 26 January 2018
Competing interests
: The authors declare no conflict of interest.