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Authors
Yang, Ying
He, Di
Wei, Liuyi
Wang, Shizhen
Chen, Lei
Luo, Mi
Mao, Zongfu https://orcid.org/0000-0001-9477-4725
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Article History
Received: 11 November 2019
Accepted: 11 May 2020
First Online: 19 May 2020
Ethics approval and consent to participate
: We used publicly-available datasets from the official CHNS website (). Hence, the need for ethics approval was waived by the Institutional Review Board of Wuhan University. The CHNS provides respondents guarantees of their privacy and confidentially. All participants provided written informed consent. Details about the study design are available elsewhere [].
: Not applicable.
: The authors declare that they have no competing interests.
