Funding for this research was provided by:
SNUBH Research Fund (12-2013-005)
Received: 8 July 2020
Accepted: 12 October 2020
First Online: 16 October 2020
Ethics approval and consent to participate
: The study protocol was approved in advance of enrolling patients by the Institutional Review Board at Seoul National University Bundang Hospital (IRB no. B-1904-532-114). The need for informed consent was waived in view of the retrospective nature of the study and the anonymity of the data.
: Not applicable.
: No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article.