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Authors
Na, Young Gon
Lee, Beom Koo
Choi, Ji Uk
Lee, Byung Hoon
Sim, Jae Ang http://orcid.org/0000-0002-2055-6458
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Article History
Received: 15 November 2019
Accepted: 12 October 2020
First Online: 11 January 2021
Ethics approval and consent to participate
: This study was approved by the Gachon University Gil Medical Center Institutional Review Board (IRB No: GAIRB2017–349). Written informed consent was waived by the Board in this retrospective study.
: Not applicable
: The authors declare that they have no competing interests.
