Lee, Jeong-Yong
Kim, Jung Heon
Choi, Seung Jun
Lee, Jong Seung
Ryu, Jeong-Min
Article History
Received: 22 November 2019
Accepted: 30 March 2020
First Online: 13 April 2020
Ethics approval and consent to participate
: The institutional review board of Asan Medical Center approved this study and waived the requirement for informed consent (study number 2018–0418).
: Not applicable.
: The authors declare that they have no competing interests.