Funding for this research was provided by:
Samsung Medical Center grant (CRL109-61-3)
Received: 24 June 2020
Accepted: 23 September 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: The institutional review board committee approved the study protocol (IRB file number: 2008–08-079).
: Informed consent was confirmed by the IRB.
: None declared.