1. Stroke Unit, Department of Neurological and Neurosensorial Sciences, "Santa Maria alle Scotte" General Hospital, Siena, Italy
2. Unit of Neuroimaging and Neurointervention (NINT), Azienda Ospedaliera Universitaria Senese, Siena, Italy
3. Department of Medical Sciences, Surgery and Neurosciences, University of Siena, Siena, Italy