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Article History

Received: 26 October 2022

Revised: 3 August 2023

Accepted: 7 August 2023

First Online: 19 August 2023

Declarations

:

: The authors declare that they have no conflict of interest.

: All KNHANES participants submitted written informed permission prior to the investigations, which were conducted by the Korea Centers for Disease Control and Prevention. The KNHANES investigation committee provided official approval for these investigations (IRB Approval numbers: 2009-01CON-03-2C, 2010-02CON-21-C, 2011-02CON-06-C, 2012-01EXP-01-2C, 2013-07CON-03-4C, 2013-12EXP-03-5C). Under the Bioethics and Safety Act, KNHANES was excluded from evaluation in relation to research ethics from 2016 to 2017.

: Not applicable.