Kim, Soo Hyun
Kim, Han Joon
Oh, Sang Hoon
Cha, Kyungman
Article History
Received: 28 July 2019
Accepted: 15 June 2020
First Online: 22 June 2020
Ethics approval and consent to participate
: The institutional review board of The Catholic University of Korea, Seoul Saint Mary’s Hospital approved the study protocols prior to data analysis. Informed consent was waived given the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.