[1] Citadelle Hosp, Univ Dept Neurol, Liege, Belgium
[2] Univ Antwerp Hosp, Dept Neurol, Antwerp, Belgium
[3] Avicenne Hosp, Hop Univ Paris Seine St Denis HUPSSD, APHP, Dept Neurol, Paris, France
[4] Hop Instruct Armees Percy, Serv Neurol, Serv Sante Armees, Clamart, France
[5] UCLouvain, Clin Univ St Luc, Louvain, Belgium
[6] CHC Mont Legia, Dept Neurol, Liege, Belgium
[7] Sysnav, Vernon, France
[8] Ctr Hosp Univ, Dept Neurol, Liege, Belgium
[9] F Hoffmann La Roche & Cie AG, Basel, Switzerland
[10] Univ Glasgow, Sch Med Dent & Nursing, Dept Clin Neurosci, Glasgow, Lanark, Scotland
[11] Genentech Inc, San Francisco, CA USA