Jung, Pil Young http://orcid.org/0000-0001-6460-8072
Chung, Jae Sik http://orcid.org/0000-0001-7136-5128
Youn, Youngin http://orcid.org/0000-0003-4694-9206
Kim, Chang Wan http://orcid.org/0000-0001-9818-8379
Park, Il Hwan http://orcid.org/0000-0001-8155-1880
Kim, Oh Hyun http://orcid.org/0000-0002-8415-0318
Byun, Chun Sung http://orcid.org/0000-0001-5409-6798
Article History
Received: 4 October 2020
Accepted: 21 March 2021
First Online: 3 April 2021
Declarations
:
: The authors declare that they have no competing interests.
: The study was approved by the Institutional Review Board for Human Research of Yonsei University Wonju Severance Christian Hospital (CR-320105). Informed consent was waived, due to the retrospective nature of the research. In addition, only de-identified data extracted from medical records prior to analysis were used in the study.
: No informed consent necessary, as study was retrospective.
: The authors consent to the publication of this manuscript.