Choi, Joon Young
Yoon, Hyoung Kyu
Lee, Sang Yeub
Kim, Jin Woo
Choi, Hye Sook
Kim, Yu-Il
Jung, Ki-Suck
Yoo, Kwang Ha
Kim, Woo Jin
Rhee, Chin Kook
Article History
Received: 16 November 2021
Accepted: 4 February 2022
First Online: 20 February 2022
Declarations
:
: Ethical approval was obtained from the Ethics Committee of each medical center participating in KOCOSS (see the Additional file InternalRef removed for a list of those committees). Written informed consent was collected from all participating patients.
: Not applicable.
: The authors declare that they have no competing interests.