Funding for this research was provided by:
This work supported by grants National Research Foundation of Korea (NRF) grant funded by the Korean government (grant nos. NRF2013R1A1A3008851)
This work supported by grants National Research Foundation of Korea (NRF) grant funded by the Korean government (2018R1D1A1B07049610)
Article History
Received: 18 October 2021
Accepted: 21 January 2022
First Online: 31 January 2022
Declarations
:
: All participants in KoNEHS provided written informed consent. The KoNEHS dataset has been de-identified and made publicly available. This survey was approved by the institutional review board of the NIER in Korea (NIER-2016-BR-003–01, NIER-2016-BR-003–03).
: Not applicable.
: The authors declare no competing interests.