Funding for this research was provided by:
the National Research Foundation of Korea (NRF-2016R1D1A1B04935568)
Article History
First Online: 4 January 2019
Compliance with Ethical Standards
:
: S.-H. K and H-J. K report no disclosure.J.-S. K. serves as an associate editor of <i>Frontiers in Neuro-otology</i> and on the Editorial Boards of the <i>Journal of Clinical Neurology</i>, <i>Frontiers in Neuro-ophthalmology</i>, <i>Journal of Neuro-ophthalmology</i>, <i>Journal of Vestibular Research</i>, and <i>Journal of Neurology and Medicine</i>.
: The authors declare that they have no conflict of interest.