Nie, Zhong-Quan
Lin, Han
Liu, Xiao-Fei
Zhai, Ai-Ping
Tian, Yan-Ting
Wang, Wen-Jie
Li, Dong-Yu
Ding, Wei-Qiang http://orcid.org/0000-0002-8225-2951
Zhang, Xue-Ru
Song, Ying-Lin
Jia, Bao-Hua http://orcid.org/0000-0002-6703-477X
Article History
Received: 14 September 2016
Revised: 14 February 2017
Accepted: 27 February 2017
First Online: 1 March 2017
Competing interests
: The authors declare no conflict of interest.