Safety and accuracy of frameless electromagnetic-navigated (AXIEMTM)-guided brain lesion biopsies: a large single-unit study. - Giamouriadis, Anastasios; Perera, Duranka; Safdar, Afshan; Vergani, Francesco; Bhangoo, Ranjeev; Gullan, Richard; Ashkan, Keyoumars (Acta Neurochirurgica, 2019)