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Authors
Ahn, Sung Soo http://orcid.org/0000-0002-0503-5558
An, Chansik
Park, Yae Won
Han, Kyunghwa
Chang, Jong Hee
Kim, Se Hoon
Lee, Seung-Koo
Cha, Soonmee
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Funding
Funding for this research was provided by:
National Research Foundation of Korea (2017R1D1A1B03030440, 2020R1A2C1003886)
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Article History
Received: 22 April 2021
Accepted: 25 June 2021
First Online: 30 June 2021
Declarations
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: The authors declare that they have no conflict of interest.
: 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 retrospective study, formal consent was not required.
: As this is a retrospective study, the institutional review board waived the need for obtaining informed patient consent.
: All the authors gave consent for publication of the article.
