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Authors
Xu, Jinpeng
Tian, Guomei
Sun, Jiale
Liu, Jian
Chen, Fangting
Shi, Qi
Zhang, Ting
Zhang, Hongyu
He, Jingran
Deng, Fangmin
Zhang, Bokai
Wang, Haixin
Wu, Qunhong
Kang, Zheng
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Article History
Received: 6 July 2022
Accepted: 4 May 2023
First Online: 17 May 2023
Declarations
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: CFPS is a public database. Therefore, ethics approval and consent to participate were not applicable in this study. The data collection work of CFPS had already been approved by the Ethics Committees of the Institution of Social Science Survey, Peking University. All subjects gave informed consent for inclusion prior to participation in the study. We confirmed that all methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.
