Xie, Heping
Zhou, Zongkui
Liu, Qingqi
Funding for this research was provided by:
Major Program of National Social Science Foundation of China (11&ZD151)
Fundamental Research Funds of Central China Normal University (CCNU14Z02004)
Article History
First Online: 20 June 2018
Compliance with Ethical Standards
: This article does not contain any studies with human participants or animals performed by any of the authors.
: The authors declare that they have no conflict of interest.