Funding for this research was provided by:
Ministry of Environment (RE201806039, RE201806027)
Ministry of Education (NRF-2017R1D1A1B03034157)
Received: 4 March 2020
Accepted: 19 May 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: Both the KNUH and CNUH studies were approved by the Institutional Review Board at individual sites (KNUH 2019–06-007 and CUH 2016–03–020-005).
: Not applicable.
: Eric A. Hoffman is a shareholder in VIDA diagnostics, a company that is commercializing lung image analysis software derived by the University of Iowa lung imaging group. He is also a member of the Siemens CT advisory board.