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Authors
Wang, Changwei http://orcid.org/0000-0002-8102-3401
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Article History
Received: 12 November 2021
Accepted: 10 June 2022
First Online: 1 August 2022
Declarations
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: The author declares that the work is written with due consideration of ethical standards. The study was conducted in accordance with the ethical principles approved by the Ethics Committee of Ningxia University (Protocol No 3 of 15.02.2019).All participants gave their written informed consent.
: Not applicable.
: The author declares that there are no competing interests.
