Jang, Jinyoung http://orcid.org/0000-0002-2744-6374
Jung, Hyun-Sung http://orcid.org/0000-0002-7769-961X
Kim, Sukil http://orcid.org/0000-0001-9730-9845
Lee, Kyoung-Uk http://orcid.org/0000-0002-4505-9722
Article History
Accepted: 20 July 2021
First Online: 30 July 2021
Declarations
:
: The authors declare that there is no conflict of interest.
: All the participants in this study provided written informed consent. All procedures performed the study were approved by the Korean Centers for Disease Control and Prevention Research Ethics Committee (IRB no. 2013-07CON-03-4C for 2013 and IRB no. 2013-12EXP-03-5C for 2014. Exemption has been granted since 2015).
: Informed consent was obtained from all individual participants included in the study.