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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (no.71672139, 71932007)
Humanities and Social Science Talent Plan of Shaanxi Province (7121900018)
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Article History
Received: 3 April 2019
Accepted: 9 December 2020
First Online: 2 January 2021
Compliance with Ethical Standards
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: All Authors declare that they have no conflict of interest.
: This article does not contain any studies with animals performed by any of the authors.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
