Funding for this research was provided by:
National Research Foundation of Korea (NRF-2018M3C7A1056898)
Bio & Medical Technology Development Program of the National Research Foundation (NRF-2018M3A9H6081483)
Received: 14 February 2020
Accepted: 31 August 2020
First Online: 7 September 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Severance Hospital with number 4-2018–1010.
: Not applicable.
: All authors declare that they have no conflicts of interest.