Koh, Kyungmin
Jun, Ikhyun
Kim, Tae-im
Kim, Eung Kweon
Seo, Kyoung Yul
Article History
Received: 29 January 2021
Accepted: 4 May 2021
First Online: 5 June 2021
Declarations
:
: This retrospective study was approved by the Institutional Review Board of Yonsei University, Seoul, Republic of Korea (IRB number: 4–2019-1315), and the tenets of the Declaration of Helsinki were followed. Considering the retrospective nature of the study and the use of deidentified patient data, the written informed consent was waived by the Institutional Review Board of Yonsei University, Seoul, Republic of Korea.
: Not applicable (no identifying patient data).
: The authors declare they have no competing interest.