Funding for this research was provided by:
Young Scientists Fund (31500908)
Youth Grant of Humanities and Social Science Foundation from Ministry of Education (14YJC190023)
the Fundamental Research Funds for the Central Universities
Article History
First Online: 13 September 2019
Compliance with Ethical Standards
:
: There are no financial disclosures from any authors.
: We declare that there are no conflicts of interest relevant to this manuscript. There is no significant financial support for this manuscript that could influence the outcome. We have full control of all primary data and agree to allow the journal to review our data if requested. The submitted materials have been published or under review elsewhere.