[1] Hosp Univ Basel, Dept Neurol, Basel, Switzerland
[2] Clin Neurooutaouais, Quebec Jj A, PQ, Canada
[3] Heinrich Heine Univ Dusseldorf, Med Fac, Dept Neurol, Dusseldorf, Germany
[4] Univ Basel, Swiss Trop & Publ Hlth Inst, Basel, Switzerland
[5] Osped San Raffaele, Dept Neurol, Milan, Italy
[6] Osped San Raffaele, Dept Neurorehabil, Milan, Italy