Received: 8 July 2019
Accepted: 19 December 2019
First Online: 11 January 2020
Ethics approval and consent to participate
: This study was carried out in accordance with the permission of the Gyeongsang National University Institutional Review Board (GNUHIRB-2009-022) in the Gyeongsang National University Hospital. All participants signed an informed consent.
: Not Applicable.
: The authors declare that they have no conflicts of interest with the contents of this article.