Received: 12 January 2019
Accepted: 18 July 2019
First Online: 27 July 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Hallym University Sacred Heart Hospital and registered atExternalRef removed(NCT 03571854). Written informed consent was obtained from all participants prior to inclusion in the study.
: Not applicable.
: The authors declare that they have no competing interests.