1. Neurosurgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
2. Department of Neurological Surgery, Wexner Medical Centre, The Ohio State University College of Medicine, Columbus, Ohio
3. Otorhinolaryngology - Head and Neck Surgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
4. Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden
5. Neurosurgery, Catholic University School of Medicine, Rome, Italy
6. Otorhinolaryngology, Catholic University School of Medicine, Rome, Italy
7. Division of Anatomy, Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
8. Section of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
9. Neurosurgery, Toronto Western Hospital, University Health Network, Toronto, Canada