Received: 27 July 2021
Accepted: 9 November 2021
First Online: 7 December 2021
: This study was approved by the Institutional Review Board of the Seoul National University Boramae Medical Center (IRB No. 06–2011–93). Written informed consent was obtained from all the participants. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors have no competing interests.