Funding for this research was provided by:
Korea Disease Control and Prevention Agency
National Research Foundation of Korea (2019M3E5D1A01066063)
Received: 14 December 2021
Accepted: 12 February 2022
First Online: 22 February 2022
: The study’s protocol was approved by the Institutional Review Board of Hanyang University, Seoul Hospital (IRB no. 2020-12-040). The requirement for an informed written consent from patients was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.