Funding for this research was provided by:
National Research Foundation of Korea (NRF-2015R1A2A2A04004063)
Korea Health Industry Development Institute (HI16C1985)
Received: 29 January 2017
Accepted: 6 March 2018
First Online: 18 May 2018
Ethics approval and consent to participate
: The institutional review board of ASAN, South Korea, approved all samples, along with documented consent from all patients who participated in the study (2012–0389).
: Not applicable
: The authors declare that they have no competing interests.
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