Received: 25 May 2020
Accepted: 20 October 2020
First Online: 29 October 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Yonsei Sarang Hospital (IRB No. 18- DR-03). All procedures were in accordance with the ethical standards of the institutional and/or national research committee.
: Not applicable
: The authors declare no conflict of interest.