Funding for this research was provided by:
National Natural Science Foundation of China (31971505)
Natural Science Foundation of Jilin Province (20170101163JC)
Program of Introducing Talents Discipline to Universities (B16011)
Scientific Research Project of the Department of Education, Jilin Province (JJKH20200581KJ)
Article History
Received: 3 September 2019
Accepted: 24 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: There are no competing interests to declare.