1. Neurosurgery Unit, Highly Specialized Hospital and of National Importance “Garibaldi”, Catania, Italy
2. Department of Neurosurgery, Cannizzaro Hospital, Trauma Center, Gamma Knife Center, Catania, Italy
3. Neurosurgery Unit, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
4. Neurosurgery Department, James Cook University Hospital, Middlesbrough, UK
5. Department of Neurosurgery, Neurosurgery Clinic, Birgunj, Nepal
6. Department of Experimental Biomedicine and Clinical Neurosciences, School of Medicine, Postgraduate Residency Program in Neurological Surgery, Neurosurgical Clinic, AOUP “Paolo Giaccone”, Palermo, Italy