%0 Journal Article %T Persistent Upbeat Positional Nystagmus in a Patient with Bilateral Posterior Canal Benign Paroxysmal Positional Vertigo %A Akihide Ichimura %A Shigeto Itani %J Archive of "Case Reports in Otolaryngology". %D 2019 %R 10.1155/2019/4281641 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6458853/