Choi, Joon Young http://orcid.org/0000-0003-1060-0096
Article History
Received: 12 September 2017
Revised: 16 November 2017
Accepted: 13 December 2017
First Online: 12 January 2018
Compliance with Ethical Standards
:
: Joon Young Choi declares that he has no conflicts of interest.
: 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.
: Not applicable.