Article History
Received: 2 December 2019
Revised: 11 February 2020
Accepted: 13 February 2020
First Online: 25 February 2020
Compliance with ethical standards
:
: Drs. Choi and HJ Kim, and Oh report no disclosure. Dr. J.S. 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 Pusan National University Hospital (1907-004-080).