Funding for this research was provided by:
Ministry of Education (NRF-2017S1A5A2A01027315)
Article History
First Online: 13 February 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures undertaken in this study were approved in advance by the Institutional Review Board (IRB) of the Ewha Womans University.
: IRB approved informed consent and assent procedures were followed for all participants in this study.