Received: 18 May 2021
Accepted: 18 June 2021
First Online: 30 August 2021
: Not applicable.
: The present study was conducted in accordance with the Declaration of Helsinki and Good Clinical Practice guidelines and was approved by the Institutional Review Board (IRB) of Konkuk University Medical Center (IRB no: 2020–12-002). Written informed consent was waived by IRB of Konkuk University Medical center due to retrospective nature of present study.
: The authors declare that they have no competing interests relevant to this manuscript.