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Authors
Ahn, Soojin
Choi, Youngjae
Choi, Woohyeok
Jo, Young Tak
Kim, Harin
Lee, Jungsun
Joo, Sung Woo https://orcid.org/0000-0001-6555-9110
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Article History
Received: 11 March 2021
Accepted: 24 May 2021
First Online: 29 May 2021
Declarations
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: This study was approved by the Institutional Review Board (IRB) of the Asan Medical Center (IRB No. 2018-0131). The requirement for informed consent was exempted because of the use of anonymous and de-identified data.
: Not applicable.
: The authors declare that they have no competing interests.
