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Authors
Zhang, Huanrui
Tian, Wen
Sun, Yujiao
- License Information
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Article History
Received: 26 January 2022
Accepted: 20 April 2022
First Online: 4 May 2022
Declarations
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: The survey protocol was approved by NCHS Ethics Review Board (https://ExternalRef removed), and all participants have written informed consent.
: Not applicable.
: There are no conflicts of interests of any of the authors.
