Funding for this research was provided by:
Korea Health Industry Development Institute (1731340-2)
Text and Data Mining valid from 2019-03-27
Received: 6 December 2018
Accepted: 11 March 2019
First Online: 27 March 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board (IRB) of National Cancer Center (NCC2018-0051).
: Not applicable
: The authors declare that they have no competing interests.
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