Text and Data Mining valid from 2019-11-07
Received: 11 July 2019
Accepted: 22 October 2019
First Online: 7 November 2019
Ethics approval and consent to participate
: The present study was approved by the institutional review boards of the Gyeongsang National University Hospital and the Gyeongsang National University Changwon Hospital, with both of which the current authors are affiliated. (GNUH 2018–02-013 and GNUCH 2018–01-002) The need for consent was waived by the institutional review boards.
: Not applicable.
: The authors declare that they have no conflicts of interest with the contents of this article.