Seo, Seung-Suk
Kim, Chang-Wan
Lee, Chang-Rack http://orcid.org/0000-0002-1745-0273
Park, Dae-Hyun
Kwon, Yong-Uk
Kim, Ok-Gul
Kim, Chang-Kyu
Article History
Received: 27 May 2019
First Online: 14 December 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 and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Formal consent was not required for the study.