1. Department of Neurosurgery, Trauma Center, Gamma Knife Center, Cannizzaro Hospital, Catania, Italy
2. School of Medicine and Surgery, University Kore of Enna, Enna, Italy
3. Department of Medicine, University of Cambridge, United Kingdom
4. Neurosurgery Unit, Department of Biomedicine, Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, Palermo, Italy
5. Department of Neurosurgery, Sant’Elia Hospital, Caltanissetta, Italy
6. Pathology Unit, Cannizzaro Hospital, Catania, Italy
7. Laboratorio de Neuroanatomía Microquirúrgica, LaNeMic-II Cátedra de Anatomía, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
8. Radiation Oncology Unit - REM Radioterapia, Viagrande, Italy
9. Neurosurgery Unit, Department of Head and Neck Surgery, Garibaldi Hospital, Catania, Italy