1. Neurology Unit, Arcispedale Santa Maria Nuova-IRCCS, Reggio Emilia, Italy
2. Department of Clinical and Experimental Medicine, University of Parma, Parma, Italy
3. Neuro-Oncology Unit, Regina Elena National Cancer Institute, Rome, Italy
4. Headache Centre, Department of Clinical and Experimental Medicine, University of Parma, Parma, Italy
5. Biostatistical Unit, Regina Elena National Cancer Institute, Rome, Italy
6. Emergency Neurosurgery Unit, Arcispedale Santa Maria Nuova-IRCCS, Reggio Emilia, Italy
7. Neurosurgery Neurotraumatology Unit, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy