Funding for this research was provided by:
Ministry of Health and Welfare (1420270)
Ministry of Science, ICT and Future Planning (2015R1C1A1A01053547)
Text and Data Mining valid from 2017-09-02
Received: 14 January 2017
Accepted: 28 August 2017
First Online: 2 September 2017
Ethics approval and consent to participate
: The study was approved by the institutional review board of Yonsei Cancer Center, Seoul, Korea. Written informed consent was obtained before treatment from patients.
: Not applicable.
: The authors declare that they have no competing interests.
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