1 Neurology and Stroke Unit, Neuroscience and Rehabilitation Department, Azienda Ospedaliera G Brotzu, Cagliari 09134, Italy. Electronic address: mauriziomelis@aob.it.
2 Neurology Unit, USL Umbria 1, Città di Castello, Italy.
3 Neurovascular Treatment Unit, Department of Human Neurosciences, Sapienza University, Rome, Italy.