Funding for this research was provided by:
National Cancer Center (1310280, 1311240, 1510530, 1610180, 1810610, 1910370 and 1910270)
National R&D Program for Cancer Control, Ministry for Health and Welfare (20170910)
Received: 22 June 2020
Accepted: 18 February 2021
First Online: 2 March 2021
Ethics approval and consent to participate
: This study was a single center, open-label, and randomized trial that was conducted at the National Cancer Center, Korea. The institutional review board at the National Cancer Center approved the trial protocol (approval number: NCC2015-0207), and written informed consent was obtained from all participants before enrollment.
: Not applicable.
: The authors declare no conflict of interest.