[1] Radboud Univ Nijmegen, Dept Neurol, Med Ctr, NL-6500 HB Nijmegen, Netherlands
[2] Univ Barcelona, Neurol Serv, Hosp Clin, Barcelona, Spain
[3] Univ Pisa, Dept Neurosci, Pisa, Italy
[4] Univ Kiel, Dept Neurol, D-2300 Kiel, Germany
[5] Med Univ Warsaw, Dept Neurol, Warsaw, Poland
[6] Palacky Univ, Dept Neurol, CR-77147 Olomouc, Czech Republic
[7] Reta Lila Weston Inst Neurol Studies, London, England
[8] Univ Marburg, Ctr Nervous Dis, Marburg, Germany
[9] Innsbruck Med Univ, Dept Neurol, Innsbruck, Austria
[10] Univ Hosp, Clin Invest Ctr, Dept Clin Pharmacol, Toulouse, France
[11] Univ Hosp, Dept Neurosci, Toulouse, France
[12] Fac Med Lisbon, Lab Farmacol Clin & Terapeut, Lisbon, Portugal
[13] Fac Med Lisbon, Inst Mol Med, Lisbon, Portugal