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Authors
Song, Kwang‐Seop
Park, Sung Chan
Sohn, Dae Kyung
Oh, Jae Hwan
Kim, Min Jung
Park, Ji Won
Ryoo, Seung‐Bum
Jeong, Seung‐Yong
Park, Kyu Joo
Oh, Heung‐Kwon
Kim, Duck‐Woo
Kang, Sung‐Bum
,
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Article History
First Online: 13 August 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Institutional review boards of the three included hospitals reviewed this study and waived the requirement for informed consent on the basis of its retrospective design and minimal risk to the participants. However, method was conducted in accordance with the committee’s approved guidelines to protect patients’ health information.
