1 Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
2 Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy.
3 Department of Neurological Surgery, Fundación Universitaria de Ciencias de La Salud (FUCS), Hospital de San José, Bogotá, Colombia.
4 Neurosurgery Division, Department of Neurology, Clinical Hospital, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brazil.
5 Department of Diagnostic Radiology-Neuro Imaging, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States.
6 San Paolo Medical School, Department of Health Sciences, Università Degli Studi di Milano, Milan, Italy.