Funding for this research was provided by:
Ministry of Education, Science and Technology (NRF-2016R1D1A1B04935568)
Text and Data Mining valid from 2019-10-14
Received: 21 September 2019
Accepted: 9 October 2019
First Online: 14 October 2019
Compliance with ethical standards
: Drs. Yun, Lee, Kwon, Jung and Yang report no disclosures. Dr. Kim serves as an associate editor of Frontiers in Neuro-otology and on the editorial boards of the Journal of Clinical Neurology, Frontiers in Neuro-ophthalmology, Journal of Neuro-ophthalmology, Journal of Vestibular Research, Journal of Neurology, and Medicine.
: This study followed the tenets of the Declaration of Helsinki, and was performed according to the guidelines of Institutional Review Board of Seoul National University Bundang Hospital (B-1906-544-702).