Funding for this research was provided by:
Korea Healthcare Technology R&D Project, Ministry of Health and Welfare (HI15C3083 and HI15C1736)
National Research Foundation of Korea (SRC 2017R1A5A1014560)
Received: 19 July 2019
Accepted: 4 February 2020
First Online: 29 March 2020
Ethics approval and consent to participate
: All subjects enrolled in this study provided written informed consent. The study protocol was approved by the Seoul National University Hospital Institutional Review Board (IRB number 1709-105-887).
: Not applicable
: The authors declare that they have no competing interests.