[1] Clermont Ferrand Univ Hosp, Dept Neurol, F-1 Clermont Ferrand, France
[2] Univ Nimes Hosp, Dept Neurol, Hop Caremeau, Nimes, France
[3] Inst Pierre Louis dEpidemiol & Sante Publ Paris, Sorbonne Univ, Pitie Salpetriere Hosp, Dept Infect & Trop Dis, Paris, France
[4] Strasbourg Univ Hosp, Dept Neurol, Strasbourg, France
[5] Univ Lille, Inserm U1172 LilNCog, CHU Lille, FHU Precise, Lille, France
[6] Global Med Affairs Neurol & Immunol, Ares Trading SA affiliate Merck KGaA, Darmstadt, Switzerland
[7] Dept Neurol, Med Affairs affiliate Merck KGaA, Darmstadt, France
[8] Caen Univ Hosp, Dept Neurol, Caen, France