Bang, Dae-Hyouk
Shin, Won-Seob https://orcid.org/0000-0002-6515-7020
Article History
Received: 30 September 2016
Accepted: 12 October 2016
First Online: 31 October 2016
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 and/or national 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.