Received: 27 January 2022
Accepted: 4 July 2022
First Online: 14 July 2022
: All procedures performed in studies involving human participants were 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. The conduct of this retrospective study and waiver of informed consent were approved by the institutional review board of the Korea University Medical Center.
: Not applicable.
: The authors have no conflicts of interest to declare.