Funding for this research was provided by:
Yonsei University College of Medicine (6-2016-0125)
Received: 14 August 2020
Accepted: 12 January 2021
First Online: 22 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board of Gangnam Severance Hospital (IRB No. 3-2019-0147), and informed consent was waived.
: Not applicable.
: All authors declare that they have no conflict of interests related to this study.