Funding for this research was provided by:
Korea Health Industry Development Institute (HI19C0847)
Received: 8 June 2021
Revised: 6 September 2021
Accepted: 10 October 2021
First Online: 1 January 2022
: The scientific guarantor of this publication is Young Jun Cho, MD.
: Kwang Nam Jin and Hyungjin Kim received a research grant from Lunit for activities not related to the present article. Other authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: Sohee Oh kindly provided statistical advice for this manuscript.No complex statistical methods were necessary for this paper.
: The study design was approved by the appropriate ethics review board and the requirement of informed consent was waived.
: Institutional Review Board approval was obtained. IRB No. was 10–2019-48 (Boramae Medical Center), 2019–05-022 (Konyang University Hospital), and 2020–322 (Gil Medical Center), respectively.
: • retrospective• diagnostic study• multicenter study / performed at three institutions