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Authors
Zhou, Ying
Zhi, Fu
Gao, Beibei
Liao, Shengen
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Article History
Received: 2 January 2022
Accepted: 22 November 2022
First Online: 15 December 2022
Declarations
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: The study protocol was approved by the Ethics Review Board of National Center for Health Statistics and all participants provided written informed consent. All methods were performed in accordance with the relevant the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing financial interests.
