Extended endoscopic endonasal posterior (transclival) approach to tumors of the clival region and ventral posterior cranial fossa. Part 3. Analysis of surgical treatment outcomes in 127 patients [in Russian] - Shkarubo, A N; Koval', K V; Kadashev, B A; Andreev, D N; Chernov, I V (Vopr Neirokhir, 2018)