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Authors
Shin, Nari
Choi, Ji Ae
Choi, Jeong Min
Cho, Eun-Suk
Kim, Joo Hee
Chung, Jae-Joon
Yu, Jeong-Sik https://orcid.org/0000-0002-8171-5838
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Article History
Received: 16 December 2019
Accepted: 27 April 2020
First Online: 15 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.<b>Ethical standards</b>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.
