Moon, Kyung-Chul
Jung, Jae-Eun
Dhong, Eun-Sang http://orcid.org/0000-0002-7521-0518
Jeong, Seong-Ho
Han, Seung-Kyu
Article History
Received: 28 January 2019
Accepted: 7 April 2019
First Online: 2 May 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest to disclose.
: 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 retrospective study, formal consent is not required.
: Informed consent was obtained from all individual participants included in this study.