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Authors
Lee, Hye-Eun https://orcid.org/0000-0003-4648-5042
Kim, Myoung-Hee
Choi, Min
Kim, Hyoung-Ryoul
Kawachi, Ichiro
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Article History
Received: 26 August 2020
Accepted: 15 February 2021
First Online: 27 February 2021
Ethics approval and consent to participate
: Ethics approval was not required for this study, because we used publicly open survey data without personal identifier.
: N/A
: The authors declare that they have no conflict of interest.
