Funding for this research was provided by:
Ministry of Education, Science and Technology (2017030666)
Article History
Received: 20 December 2020
Accepted: 30 April 2021
First Online: 24 May 2021
Declarations
:
: The authors declare no conflicts of interest.
: All procedures performed in this study involving human participants were conducted in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Participants were informed of the purpose of the research and provided written informed consent when they participated in KNHANES.