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Authors
Kang, Jieun
Lee, Jae Seung
Lee, Sei Won
Lee, Jung Bok
Oh, Yeon-Mok https://orcid.org/0000-0003-0116-4683
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Article History
Received: 16 December 2020
Accepted: 31 January 2021
First Online: 12 February 2021
Ethics approval and consent to participate
: This study was conducted in accordance with the amended Declaration of Helsinki and the protocol was approved by the Institutional Review Board of Asan Medical Center (2018-0298). Informed consent was waived due to the retrospective nature of the study.
: The authors declare that they have no competing interests.
