Received: 15 May 2020
Accepted: 25 August 2020
First Online: 20 November 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Samsung Medical Center [IRB file No. 2017-12-079; 2019-02-038].
: There are no individualized data in this article. Not applicable.
: The authors declare that they have no competing interests. This article is the authors’ original work, has not been published elsewhere, and is not under consideration for publication elsewhere.