Amponsah, Emmanuel Kofi http://orcid.org/0000-0002-0720-3025
Frimpong, Paul http://orcid.org/0000-0002-1647-2155
Eo, Mi Young http://orcid.org/0000-0001-7055-9924
Kim, Soung Min http://orcid.org/0000-0002-6916-0489
Lee, Suk Keun http://orcid.org/0000-0001-6255-4197
Article History
Received: 20 August 2018
Accepted: 26 September 2018
First Online: 29 September 2018
Compliance with ethical standards
:
: There are no conflicts of interest in this article.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Review Board at Seoul National University 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.