Received: 1 May 2022
Accepted: 26 September 2022
First Online: 10 November 2022
: The survey protocol was approved by the Institutional Review Board of the Korea Centers for Disease Control and Prevention (IRB No. 2018-01-03-C-A). All participants signed a consent form to participate in the survey. However, this study did not require ethics approval, because the KNHANES data are publicly available.
: Not applicable.
: There are no conflicts of interest to declare.