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Authors
Im, Sang-Hyuk
Jang, Dong-Kyu https://orcid.org/0000-0002-6736-1818
Kim, Hoon
Park, Sang-Kyu
Han, Kyung-Do
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Article History
Received: 1 July 2021
Accepted: 29 July 2021
First Online: 24 August 2021
Declarations
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: All procedures performed in studies involving human participants were 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.
: For this type of study, formal consent is not required.
: For this type of study, formal consent is not required.
: For this type of study, formal consent is not required.
: The authors declare no competing interests.
