[1] Univ Dresden, Dept Neurol, Dresden, Germany
[2] Philipps Univ Marburg, Dept Neurol, Marburg, Germany
[3] WWU Munster, Klinikum Osnabruck, Acad Teaching Hosp, Dept Neurol & Neurorehabil, Osnabruck, Germany
[4] UCL, Reta Lila Weston Inst, London, England
[5] BIAL Deutschland MorfeldenWalldorf, Morfelden Walldorf, Germany
[6] BIAL Portela & Ca SA, Coronado S Romao & S Mamede, Trofa, Portugal
[7] Univ Porto, MedInUP, Ctr Drug Discovery & Innovat Med, BIAL Portela & Ca SA, Porto, Portugal