[1] Univ Naples 2, Div Neurol 2, Dept Clin & Expt Med, Multiple Sclerosis Ctr,AOU Federico 2, Naples, Italy
[2] Univ A Avogadro, Dept Neurol, Novara, Italy
[3] Marche Polytech Univ, Neurol Clin, Ancona, Italy
[4] A Perrino Hosp, Dept Neurol, Brindisi, Italy
[5] Univ Perugia, Clin Neurol, Dipartimento Med, Perugia, Italy
[6] Santa Corona Hosp, Dept Neurol, Stroke Unit, Pietra Ligure Savona, Italy