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Authors
Oh, Hyongmin
Kim, Hansol
Yoon, Hyun-Kyu
Lee, Hyung-Chul
Park, Hee-Pyoung https://orcid.org/0000-0002-4772-0780
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Article History
Received: 15 January 2020
Accepted: 20 February 2020
First Online: 26 February 2020
Ethics approval and consent to participate
: Ethical approval for this retrospective study (1909–021-1060) was provided by the Institutional Review Board (101, Daehak-ro, Jongno-gu, Seoul, Korea, 03080) of Seoul National University Hospital (SNUH) on 6 September 2019. The requirement for written informed consent was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.
