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Authors
Lim, Joo Hyun
Song, Ji Hyun
Chung, Su Jin http://orcid.org/0000-0002-0983-8446
Chung, Goh Eun
Kim, Joo Sung
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Article History
Received: 7 October 2020
Accepted: 17 February 2021
First Online: 2 March 2021
Ethics approval and consent to participate
: All procedures were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1996 and later versions. The Institutional Review Board of Seoul National University Hospital, which complies with the declaration of Helsinki, approved this study (IRB No. H-1504-045-663). Formal consent was not obtained because of the retrospective nature or this study, and which was approved by the Institutional Review Board. No personal identification information is included in this study.
: Not applicable.
: The authors declare that they have no competing interests.
