Removal of grade IV vestibular schwannomas by retrosigmoid approach: results of a cumulative series of two European centers. - Mastronardi, Luciano; Sames, Martin; Campione, Alberto; Vachata, Petr; Giacobbo Scavo, Carlo; Cee, Jiri; Boccacci, Fabio; Radovnicky, Tomas (British Journal of Neurosurgery, 2025)