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Authors
Jin, Hyungyoon
Lee, Seung-Yeon
Lee, Wanhyung
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Article History
Received: 1 March 2025
Accepted: 4 July 2025
First Online: 11 July 2025
Declarations
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: The authors declare no competing interests.
: The study was performed in accordance with the ethical standards of the Declaration of Helsinki (1964) and its subsequent amendments. In 2016 and 2017, the survey was conducted with the Institutional Review Board (IRB) review exemption because the survey was considered as research directly conducted by the government for public welfare according to Article 2, Paragraph 1 of the Bioethics and Safety Act and Article 2, Paragraph 2, Subparagraph 2 of the Enforcement Rules of the same Act. Research review resumed in 2018, and the IRB of the KCDC approved the investigation of the KNHANES conducted from 2018 to 2023 (IRB approval numbers 2018-01-03-P-A, 2018-01-03-C-A, 2018-01-03–2 C-A, 2018-01-03–5 C-A, 2018-01-03–4 C-A, and 2022-11-16-R-A).
