[1] GB Morgagni L Pierantoni Hosp, Unit Neurol, 34 Via Carlo Forlanini, I-47121 Forli, Italy
[2] Univ Bologna, Dept Biomed & Neuromotor Sci, Alma Mater Studiorum, Bologna, Italy
[3] Inst Neurol Sci, IRCSS, Bologna, Italy
[4] Oasi Inst Res Mental Retardat & Brain Aging IRCCS, Unit Neurol LC, Troina, Italy