Funding for this research was provided by:
Asan Institute for Life Sciences, Asan Medical Center (2017IF0761)
Korea Health Industry Development Institute (No. HI18C1216)
Received: 29 September 2020
Accepted: 8 February 2021
First Online: 12 February 2021
Ethics approval and consent to participate
: The protocol for this retrospective and registry-based cohort study followed the Helsinki declaration and was approved by the institutional review board of Asan Medical Center, Seoul, Korea (IRB No. 2017–0216). Informed consent was obtained in all participants in the study.
: Not applicable.
: The authors declare that they have no competing interests.