A two-stage combined anterolateral and endoscopic endonasal approach to the petroclival region: an anatomical study and clinical application. - Labib MA; Zhao X; Houlihan LM; Abramov I; Inoue M; Martinez-Perez R; Catapano JS; Lawton MT; Preul MC; Youssef AS (Acta neurochirurgica, 2022)