1. Department of Neurosurgery and Gamma Knife Radiosurgery, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy
2. Department of Pathology, Vita-Salute San Raffaele University and IRCCS San Raffaele Scientific Institute, Milan, Italy
3. Department of Neuroradiology and CERMAC, Vita-Salute San Raffaele University, and IRCCS San Raffaele Scientific Institute, Milan, Italy