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Authors
Jung, Hyoung-Seok https://orcid.org/0000-0003-4756-6258
Chun, Kwang-Jin
Kim, Jae Yoon
Lee, Jae-Sung https://orcid.org/0000-0002-3745-9048
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Article History
Received: 24 October 2019
Accepted: 4 February 2020
First Online: 19 February 2020
Compliance with ethical standards
:
: None of the authors have any conflicts to disclose relating to the purpose of this study.
: All the procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: As this study was retrospective in nature, using existing data from medical records, informed consent was not obtained.
