About the Authors
- Ping Wang
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Roles Conceptualization, Funding acquisition, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing
* E-mail: pwang2160@163.com
Affiliation School of Economics, Southwestern University of Finance and Economics, Chengdu, China
- Lijiao Liu
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Roles Software, Visualization, Writing – original draft
Affiliation School of Economics, Southwestern University of Finance and Economics, Chengdu, China
Competing Interests
The authors have declared that no competing interests exist.