Funding for this research was provided by:
National Research Foundation of Korea (NRF-2014M3A9D5A01073556, NRF-2017R1A2B3011870)
National Research Foundation of Korea (NRF-2018R1A5A2024425)
Received: 6 April 2018
Accepted: 4 September 2019
First Online: 28 November 2019
Ethics approval and consent to participate
: This study was approved by the ethical committees of the IRB of the Samsung Medical Center. The study was retrospective, and consent to participate was not required, as per the guidelines of the IRB.
: Not applicable.
: JH is a salaried employee of Gencurix, Inc. HN, NLK, YKS, and MOL hold a patent application related to the content of this article. The other authors declare that they have no competing interests.