[1] James J Peters Vet Affairs Med Ctr, Dept Neurol, Bronx, NY USA
[2] Mt Sinai Sch Med, Dept Neurol, New York, NY USA
[3] Clin Las Condes, Dept Neurol, Santiago, Chile
[4] Univ Hosp Zurich, Dept Neurol, Zdrich, Switzerland
[5] Ludwig Maximilians Univ Munchen, Dept Neurol, Munich, Germany