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Study protocol. Group A received the standard modified Epley maneuver and group B received the modified Epley maneuver with a pillow under the shoulders. The patients were treated with one of the two modified Epley maneuvers at the first visit and then visited the clinic 7 days after treatment for follow-up. PC, posterior semicircular canal; BPPV, benign paroxysmal positional vertigo; DH, Dix-Hallpike.
