Received: 17 June 2021
Accepted: 18 November 2021
First Online: 29 November 2021
: This study was approved by the Institutional Review Board of Chungnam National University Hospital (IRB no. 2021-03-049). All procedures were performed in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no conflict of interest.