[1] Johannes Wesling Klinikum Minden, Dept Neurol, D-32429 Minden, Germany
[2] Univ Aquila, Dept Neurol, I-67100 Laquila, Italy
[3] Hosp Clin Barcelona, Neurol Serv, Barcelona, Spain
[4] Mt Godinne Univ Hosp, Dept Neurol, Yvoir, Belgium
[5] Hop Roger Salengro, Serv Vasc Neurol, Lille, France
[6] Johannes Wesling Klinikum Minden, Dept Neurol, Minden, Germany
[7] Tech Univ Munich, Dept Neurol, Munich, Germany
[8] Freeman Rd Hosp, No Vasc Unit, Newcastle Upon Tyne NE7 7DN, Tyne & Wear, England
[9] Univ Duisburg Essen, Dept Neurol, Essen, Germany