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Authors
Chun, Jung Won
Lee, Sang Hyub http://orcid.org/0000-0003-2174-9726
Kim, Joo Seong
Park, Namyoung
Huh, Gunn
Cho, In Rae
Paik, Woo Hyun
Ryu, Ji Kon
Kim, Yong-Tae
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Article History
Received: 23 February 2021
Accepted: 29 April 2021
First Online: 11 May 2021
Declarations
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: Formal consent was waived because of the retrospective nature or this study, and which was approved by the Institutional Review Board (IRB). IRB at Seoul National University Hospital (No. C-2009-058-1155) approved the study. All individual-level data were anonymized and only available to authorized researchers. IRB approved and monitored safety and adequacy of data management. This study was performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.
