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. 2022 Jul 12;13:930542. doi: 10.3389/fneur.2022.930542

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Copyright © 2022 Wang, Yan, Zhang, Han, Li, Liu, Zhang, Liu, Wu, Li, Yang and Gu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Distribution of torsional nystagmus in three suspension positions in patients with PC-BPPV-cu. UBN, upbeating nystagmus; T-UBN, torsional-upbeating nystagmus.