Minimally Invasive Direct Transcondylar Approach to the Foramen Magnum: Surgical Anatomy and Presentation of Two Clinical Cases - Diaz, Roberto; Berbeo, Miguel; Oliveros, Silvia Tatiana Quintero; Acevedo, Juan Carlos; Lee, Oscar Feo; Zorro, Oscar; Uribe, Rafael; Becerra, Jaime; Diaz, Laura; Perez, Juan Carlos; Ordoñez, Edgar (Journal of Neurological Surgery Part B: Skull Base, 2013)