Funding for this research was provided by:
Seoul National University Hospital (23-2017-0020)
Article History
Received: 15 April 2020
Accepted: 11 October 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: All authors declare no conflicts of interest associated with the present study. The corresponding author (CHL) affirm that the manuscript is an honest, accurate, and transparent account of the study being reported; that no important aspects of the study have been omitted; and that any discrepancies from the study as planned (and, if relevant registered) have been explained.