Gardner's Triangle: Surgical Anatomy and Relevance for Endoscopic Endonasal Approach to the Petrous Apex and Petroclival Region - da Silva, Martin B. Coutinho; Hernández-Hernández, Vanessa; Zenonos, Georgios A.; Wang, Eric W.; Snyderman, Carl H.; Gardner, Paul A. (Journal of Neurological Surgery Part B: Skull Base, 2022)