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Authors
Wang, Dingyao
Xie, Shitong
Wu, Jing
Sun, Bei
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Article History
Received: 14 July 2022
Accepted: 17 January 2023
First Online: 24 January 2023
Declarations
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: The protocol and data collection process of the Tianjin Health Service Survey were approved by the Institutional Review Board of Tianjin Municipal Health Commission (2008: No. [2008]225; 2013: No. [2013]23; No. [2020]549) and was conducted in accordance with the Declaration of Helsinki. Informed consent was obtained from all respondents included in the survey. Respondents were informed about their freedom of refusal. Anonymity and confidentiality were maintained throughout the survey process. Besides, the protocol of this study was approved by the Academic Ethics Committee at Tianjin University (No. THUE-2021-168) and this study was conducted under the ethics guidelines of the Declaration of Helsinki. All analyzed data were anonymized and did not contain information that might lead to the identification of any respondent.
: Not applicable.
: The authors declare that they have no competing interests.
