Funding for this research was provided by:
National Research Foundation of Korea (2021R1A2C2014304)
Received: 1 September 2021
Accepted: 10 November 2021
First Online: 17 November 2021
: The institutional review board of all participating hospitals reviewed and approved the study protocol, including the institutional review board of Asan Medical Center (No. 2019-1204) and the investigators obtained written informed consent from all patients' legal surrogates. The KORHN-PRO registry was registered under clinicaltrials.gov as protocol NCT02827422.
: Not applicable.
: The authors declare no conflict of interest.