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Authors
Choe, Sooyeon
Yoon, Chang Ho
Kim, Mee Kum
Hyon, Joon Young
Yu, Young Suk
Oh, Joo Youn https://orcid.org/0000-0002-7899-5314
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Article History
Received: 21 July 2019
Revised: 22 October 2019
Accepted: 28 October 2019
First Online: 25 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Review Board of Seoul National University Hospital (IRB No. H-1810-029-977) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from guardians of all individual participants included in the study.
