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Authors
Fang, Menglin
Tsvetkova, Milena
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Article History
Accepted: 19 March 2023
First Online: 6 April 2023
Declarations
:
: Authors declare that they have no conflict of interests.
: The authors declare 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 Minxi Vocational & Technical College (Protocol № 3 of 17.04.2021).
: All participants gave their written informed consent.
: Not applicable.
: Not applicable.
