[1] Osped Cafoncello, Dept Neurol, Azienda Unita Locale Sociosanit Treviso 9, I-31100 Treviso, Italy
[2] Mario Negri Inst Pharmacol Res, Clin Epidemiol Lab, I-20157 Milan, Italy
[3] Ludwig Boltzmann Inst Vienna, Dept Neurooncol, Vienna, Austria
[4] Hosp Clin Barcelona, Neurol Serv, Barcelona, Spain
[5] Inst Invest Biomed August Pi & Sunyer, Barcelona, Spain
[6] Hop Neurol, Hosp Civils Lyon, Ctr Reference Maladie Rare Syndromes Neurol Paran, Bron, France
[7] Univ Lyon 1, INSERM, F-69365 Lyon, France