Funding for this research was provided by:
Biomedical Research Institute grant, Kyungpook National University Hospital
Received: 21 April 2020
Accepted: 7 October 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments. This study was approved by the Institutional Review Board of KNUCH (KNUCH_07–0033). Written informed consent was obtained from all individual participants included in the study.
: Not Applicable.
: The authors have no conflict of interest to disclosure.