Funding for this research was provided by:
Liaoning Province Natural Science Foundation Guidance Program (2019-ZD-0795)
Liaoning Province College Students’ Innovation and Entrepreneurship Project (201910159209, 201910159033)
Article History
Received: 13 March 2020
Accepted: 2 July 2020
First Online: 9 July 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.