Kim, Dae-Young
Uhm, Jae-Sun
Kim, Min
Kim, In-Soo
Jin, Moo-Nyun
Yu, Hee Tae
Kim, Tae-Hoon
Kim, Jong-Youn
Joung, Boyoung
Pak, Hui-Nam
Lee, Moon-Hyoung http://orcid.org/0000-0002-7268-0741
Article History
Received: 7 September 2020
Accepted: 14 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The study design was approved by the Institutional Review Board of Yonsei University Health System (IRB approval number: 4-2019-0644), and the study was conducted in accordance with the Declaration of Helsinki. The institutional review board waived both the need for the acquisition of informed consent from patients to be included in the analysis and the need for review by a critical event committee owing to the study’s retrospective nature and the absence of patient identification data. We have got permissions to access the raw data in which personal information is anonymized, from the directors of Yonsei University’s three Severance hospitals.
: Not applicable.
: The authors declare that they have no competing interests.