Funding for this research was provided by:
Hallym University (HURF-2016-35)
Central Medical Service
Received: 18 March 2020
Accepted: 16 June 2020
First Online: 26 June 2020
Ethics approval and consent to participate
: This study has been approved by the Hallym University Dontan Sacred Heart Hospital IRB (2016–246-I) and written informed consent was obtained.
: Not applicable.
: The authors declare that they have no conflict of interest.