Yu, Gyeong Im
Mun, Kwang Ho
Yang, Seon Hee
Shin, Dong Hoon http://orcid.org/0000-0002-3623-7013
Hwang, Jae Seok
Article History
Received: 4 May 2018
Accepted: 17 August 2018
First Online: 30 August 2018
Compliance with ethical standards
:
: None of the authors has non-financial conflict of interest related to this study.
: 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.
: Informed consent was obtained from all individual participants included in the study.