1. Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
2. Neurosurgery Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
3. Department of Brain and Behavioral Sciences, University of Pavia, 27100 Pavia, Italy
4. Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
5. Medical School, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil