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Article History

Received: 26 September 2021

Revised: 14 December 2021

Accepted: 31 December 2021

First Online: 14 January 2022

Declarations

:

: This retrospective observational study was approved by the Institutional Review Board of the Seoul National University Hospital (IRB No. 2103–176-1207). All the study procedures adhered to the tenets of the Declaration of Helsinki. The need for written informed consent was waived as the study involves no more than minimal risk to subjects.

: Not applicable.

: Not applicable.

: The authors declare no competing interests.