Han, Ji Min
Han, Hye Won
Yee, Jeong
Kim, Min Kyoung
Moon, Jin Young
Cho, Soyeon
Jung, Dasom
Cho, Yoon Sook
Seo, Inyoung
Kim, Jae Youn
Gwak, Hye Sun http://orcid.org/0000-0003-0278-2563
Article History
Received: 20 February 2020
Accepted: 13 May 2020
First Online: 22 May 2020
Compliance with ethical standards
: All procedures performed in five studies involving human participants were in accordance with the ethical standards of the relevant ethics committees, which approved the studies, and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The requirement for obtaining informed consent was waived due to the retrospective nature of this study.
: The authors declare that they have no conflict of interest.