Funding for this research was provided by:
National Research Foundation of Korea
Received: 23 September 2021
Accepted: 4 January 2022
First Online: 7 February 2022
: The study was approved by the Institutional Review Board (IRB) of Samsung Seoul Medical Center (IRB no. 2020-12-029-001). The requirement for written informed consent was waived by the IRB.
: Not applicable.
: The authors declare no competing interests.