Kim, Jong-Ho
Yoo, Hyokyung
Eun, Seokchan
Article History
Received: 18 October 2020
Accepted: 18 March 2021
First Online: 31 March 2021
Declaration
:
: The study was approved by Ethics Committee (IRB no. B-2010-642-103) in the Seoul National University Bundang hospital. As this was a retrospective chart review, the requirement to obtain individual consent was waived by the Research Ethics Board.
: Not applicable.
: The authors declare that they have no competing interests.