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Authors
Huh, Youn
Kim, Young Sik
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Article History
Received: 28 August 2021
Accepted: 4 May 2022
First Online: 27 May 2022
Declarations
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: This study adhered to the principles of the Declaration of Helsinki. The Institutional Review Board of Asan Medical Center approved our study [No. AMC-IRB 2020–0824]. The requirement for informed consent was waived by the Institutional Review Board of Asan Medical Center because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.
