Kwon, Yiyoung http://orcid.org/0000-0001-5600-2070
Kim, Eun Sil http://orcid.org/0000-0003-2012-9867
Choe, Yon Ho http://orcid.org/0000-0003-1525-7688
Kim, Mi Jin http://orcid.org/0000-0002-4505-4083
Article History
Received: 17 August 2020
Accepted: 26 November 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The medical records of the patients were reviewed retrospectively with the approval of the Clinical Research Ethics Committee, and the requirement for a consent form was waived.Administrative permissions were acquired by all authors to access the data used in research.(IRB File No. SMC 2020–07-004).
: Not applicable.
: No potential conflicts of interest relevant to this article were reported.