Comparative anatomical analysis of the transcallosal-transchoroidal and transcallosal-transforniceal-transchoroidal approaches to the third ventricle - Araujo, João Luiz Vitorino; Veiga, José C E; Wen, Hung Tzu; Andrade, Almir F de; Teixeira, Manoel J; Otoch, José Pinhata; Rhoton Jr, Albert L; Preul, Mark C; Spetzler, Robert F; Figueiredo, Eberval Gadelha (Journal of Neurosurgery, 2017)