Funding for this research was provided by:
Samsung Medical Center (OTA1902901)
Received: 8 July 2020
Accepted: 1 September 2020
First Online: 5 September 2020
Ethics approval and consent to participate
: The Institutional Review Board of Samsung Medical Center (IRB No. 2019–077-187) and Seoul St. Mary’s Hospital (IRB No. KC20RISI0439) approved this study and waived the requirement for informed consent because of the observational nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.