Funding for this research was provided by:
National Natural Science Foundation of China (31771237)
Fundamental Research Funds for the Central Universities (SWU1709106)
the National Natural Science Foundation of China (31871142)
Article History
First Online: 18 June 2019
Compliance with Ethical Standards
: The study received approval from our School ethics committee, and was conducted in accordance with APA ethical guidelines.
: The authors declare that they have no conflict of interest.