Cho, Jae Hwan
Hwang, Chang Ju
Lee, Dong-Ho
Lee, Choon Sung
Article History
Received: 23 March 2021
Accepted: 27 October 2021
First Online: 17 November 2021
Declarations
:
: All methods in this study were carried out in accordance with relevant guidelines and regulations.This study was approved by the Institutional Review Board of Asan Medical Center. The need for written informed consent was waived by the Institutional Review Board ethics committee of Asan Medical Center due to retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.