Brainstem auditory evoked potential monitoring during microvascular decompression for hemifacial spasm: intraoperative brainstem auditory evoked potential changes and warning values to prevent hearing loss—prospective study in a consecutive series of 84 patients - Polo, G; Fischer, C; Sindou, M P; Marneffe, V (Neurosurgery, 2004)
; discussion 104–106