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Authors
Kim, Youngjune
Lee, Eugene https://orcid.org/0000-0003-4205-2362
Lee, Joon Woo
Kang, Yusuhn
Ahn, Joong Mo
Kang, Heung Sik
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Article History
Received: 17 February 2019
Accepted: 6 May 2019
First Online: 17 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All 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.
: For this type of study formal consent is not required.
