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Authors
Wang, Lu
Liu, Jun
Yang, Yuan
Zou, Haiou
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Article History
Received: 6 December 2020
Accepted: 25 July 2021
First Online: 4 August 2021
Declarations
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: The recruitment, consent, and field procedures were approved by the Research Ethics Board of Peking Union Medical College (2019–18-K7). Written informed consent was obtained from individual or guardian participants.
: Not applicable.
: The authors declare that they have no competing interests.
