Funding for this research was provided by:
National Social Science Fund of China (12BSH055)
National Natural Science Foundation of China (71874170)
K.C. Wong Magna Fund at Ningbo University (None)
Article History
First Online: 16 April 2019
Compliance with Ethical Standards
:
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.