Tian, Gang
Ma, Yulan
Cui, Yiran
Yang, Wenyan
Shuai, Jingliang
Yan, Yan
Article History
Received: 28 February 2023
Accepted: 19 May 2023
First Online: 5 June 2023
Declarations
:
: The CLHLS study was implemented with the approval of the Research Ethics Committee of Peking University (IRB00001052-13074).
: Informed written consent was taken voluntarily from each eligible participant or proxy interviewee.
: Not applicable.
: The authors declare no competing interests.
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