Funding for this research was provided by:
Korea Health Industry Development Institute (HI18C0513)
National Research Foundation of Korea (2018R1E1A2A02086667)
Article History
Received: 12 August 2020
Accepted: 22 October 2020
First Online: 8 November 2020
Compliance with ethical standards
:
: All contributing authors have no financial support relevant to this article, and no conflict of interest to declare.
: The Institutional Review Board of Samsung Medical Center approved this study and waived informed consent for this retrospective study.