Funding for this research was provided by:
Hallym University (HURF-2014-11)
Article History
Received: 27 December 2019
Accepted: 20 August 2020
First Online: 31 August 2020
Ethics approval and consent to participate
: This study protocol was approved by the Institutional Review Board at Hallym University, and written informed consent was obtained from all patients (application no. 2014–18).
: Not applicable.
: The authors declare that they have no competing interests.