Funding for this research was provided by:
National social Science Foundation of China (14XSH013)
The 13th 5-Year Plan for Education Science of Chongqing (2016-GX-086)
Article History
First Online: 25 September 2018
Compliance with Ethical Standards
:
: This research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Author Z declares that she has no conflict of interest. Author Z declares that she has no conflict of interest. Author G declares that she has no conflict of interest.