Funding for this research was provided by:
National Cancer Institute
Keimyung University Dongsan Medical Center (2017 research promoting grant)
Received: 5 September 2020
Accepted: 11 November 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: This study was reviewed and approved by the Institutional Review Board at Keimyung University Dongsan Medical Center (DSMC 2020-01-020, Daegu, Republic of Korea), Toyama University Hospital (Toyama, Japan), and National Hospital Organization Higashi-Ohmi General Medical Center (Shiga, Japan) and informed consent was obtained from each patient. All procedures were conducted in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that there are no conflicts of interest.