Received: 8 January 2020
Accepted: 23 November 2020
First Online: 2 December 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee and Institutional Review Board of the Faculty of Medicine, Dankook University Hospital (DKUH-2020-04-035). The procedures in this study were performed under the Declaration of Helsinki’s ethical principles for medical research involving human participants. Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.