Kim, Sung Eun http://orcid.org/0000-0002-3620-8212
Lim, Hyun-Hye http://orcid.org/0000-0002-6676-6071
Lee, Dong-Yun http://orcid.org/0000-0002-7540-0522
Choi, DooSeok http://orcid.org/0000-0002-5265-4749
Article History
Received: 7 September 2020
Accepted: 29 December 2020
First Online: 15 January 2021
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This retrospective study was granted approval by the Institutional Review Board on Samsung Medical Center (IRB approval number: 2019-07-145).
: The requirement for required consent was waived due to the retrospective nature of this study.
: Not applicable.
: Not applicable.