Objective To investigate the efficacy of Gufoni maneuver for treating geotropic nystagmus horizontal semicircular canal benign paroxysmal positional vertigo (BPPV). Methods We retrospectively analyzed 87 patients diagnosed as geotropic nystagmus horizontal semicircular canal BPPV from January to December 2016. All patients were treated by Gufoni maneuver twice and examined on the next... https://www.roneverhart.com/Ferrofish-A32pro-32-Channel-AD-DA-Converter-with-MADI-and-ADAT-p18115/