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Authors
Cao, Juan
Xie, Mingjun
Lin, Danhua
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Article History
Received: 21 August 2021
Accepted: 13 November 2021
First Online: 30 November 2021
Compliance with Ethical Standards
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: The authors declare no competing interests.
: The study followed the Ethics Committees’ guidelines and was approved by Beijing Normal university Institutional Review Board and the school principal of each participating school.
: Informed consent from adolescents was obtained from all participants for being included in the study.
