Received: 24 August 2021
Accepted: 4 April 2022
First Online: 9 April 2022
: This retrospective research protocol was approved by the Institutional Review Board of Severance Hospital, and informed consent was obtained from all study participants before participation in the study (IRB # 4–2018-1216). All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.