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Authors
Ham, Ju Hyun
Yu, Jeong-Sik https://orcid.org/0000-0002-8171-5838
Choi, Jeong Min
Cho, Eun-Suk
Kim, Joo Hee
Chung, Jae-Joon
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Article History
Received: 22 December 2020
Revised: 23 February 2021
Accepted: 18 March 2021
First Online: 23 April 2021
Declarations
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: The scientific guarantor of this publication is Jeong-Sik Yu.
: The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
: One of the authors has significant statistical expertise.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: Some study subjects have been previously reported in AJR 2020; 214:72-80.
: • retrospective• observational• performed at one institution
