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Authors
Choe, Won-Seok
Lee, So-Ryoung
Cha, Myung-Jin
Choi, Eue-Keun
Oh, Seil
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Article History
Received: 13 July 2020
Accepted: 11 September 2020
First Online: 29 September 2020
Ethical approval and consent to participate
: The study protocol was approved by the Institutional Review Board of Seoul National University Hospital (no. 2006-219-1138). Informed consent was waived because of the retrospective nature of the study and the analysis used anonymous clinical data.
: Not applicable.
: The authors declare that they have no competing interests.
