1. Department of Diagnostics and Pathology, Neuroradiology Unit, Verona University Hospital, Verona, Italy
2. Department of Medicine, Surgery and Dentistry, Unit of Neuroradiology, Section of Neuroscience, Scuola Medica Salernitana, University of Salerno, Baronissi, Italy
3. Department of Neuroscience, ENT Unit, Università degli Studi di Padova, Padova, Italy
4. Department of Neuroradiology, Great Ormond Street Hospital for Children NHS Trust, London, UK