Lee, Jeong Won
Kim, Sung Yong
Han, Sun Wook
Lee, Jong Eun
Lee, Hyun Ju
Heo, Nam Hun
Lee, Sang Mi http://orcid.org/0000-0002-7943-3807
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2018R1C1B5040061)
Soonchunhyang University (Soonchunhyang University Research Fund)
Article History
Received: 18 March 2020
Accepted: 23 June 2020
First Online: 30 June 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Soonchunhyang University Cheonan Hospital (IRB number, 2019-03-011), and the requirement to obtain informed consent was waived by the board due to its retrospective nature.
: Not applicable
: The authors declare that they have no competing interests.