Funding for this research was provided by:
This study supported by National Research Foundation of Korea (Grant No. 2022R1A2C1005643)
Article History
Received: 27 November 2021
Revised: 24 August 2022
Accepted: 19 October 2022
First Online: 2 December 2022
Declarations
:
: The authors declare that they have no conflict of interest.
: Before investigations, all participants in KNHANES provided written informed consent, which was carried out by the Health and Nutrition Examination Department of the Korea Centers for Disease Control and Prevention. This study was approved by the KNHANES inquiry commission (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). From 2016 to 2017, KNHANES was exempt from review regarding research ethics under the Bioethics and Safety Act.
: Not applicable.