Document is current

Article History

Received: 17 November 2021

Accepted: 15 April 2022

First Online: 19 April 2022

Declarations

:

: This retrospective study adhered to the ethical standards of the Declaration of Helsinki and was approved by the Institutional Review Boards of Seoul National University Hospital (IRB No. 2102–014-1193, Seoul, Republic of Korea). The informed consent from patients was waived by the IRB because the study was based on the retrospective review of old charts.

: Not applicable.

: The authors have no conflicts of interest to disclose.