Text and Data Mining valid from 2020-04-25
Received: 20 February 2020
Accepted: 14 April 2020
First Online: 25 April 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Seoul National University Bundang Hospital (IRB no. B-1910-568-112).
: Consent for publication was obtained.
: No potential conflict of interest relevant to this article was reported.