[1] AO S Camillo Forlanini, Dept Emergency Med, Stroke Unit, I-00151 Rome, Italy
[2] Fdn IRCCS Ca Granda, Osped Maggiore Policlin, Direz Sci, Milan, Italy
[3] Fdn IRCCS Ca Granda, Osped Maggiore Policlin, UO Med Urgenza, Milan, Italy
[4] IRCCS Fdn S Lucia, Rome, Italy
[5] Fdn Biomed Europea Onlus, Rome, Italy
[6] Arcispedale Santa Maria Nuova, Neurol Dept, Nuova, Reggionellemili, Italy
[7] Ist Sci San Raffaele, Dept Neurol & Neurophysiol, Stroke Unit, I-20132 Milan, Italy
[8] Univ Perugia, Stroke Unit, Santa Maria Misericordia Hosp, I-06100 Perugia, Italy