Lee, Shin Heon
Shin, Hyun Iee
Nam, Taek-Kyun
Park, Yong-Sook
Kim, Don-Kyu
Kwon, Jeong-Taik
Article History
Received: 31 July 2020
Accepted: 20 December 2020
First Online: 3 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: As this study was a registry-based retrospective cohort study, informed consent was not obtained.
: Not applicable.