Kim, Junghee
Park, Sunhee http://orcid.org/0000-0001-7617-3483
Article History
First Online: 18 September 2018
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 research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Our study was certified as exempt from IRB full board review because we used de-identified secondary data.
: The obtainment of informed consent was not necessary for our study due to the analysis of de-identified secondary data.