[1] Univ Calgary, Foothills Med Ctr, Dept Clin Neurosci, Calgary, AB T2N 2T9, Canada
[2] Brown Univ, Dept Neurol, Providence, RI 02912 USA
[3] Brown Univ, Dept Neurosurg, Providence, RI 02912 USA
[4] Osped Santa Maria Misericordia, Stroke Unit, Perugia, Italy
[5] Univ Santiago, Hosp Clin, Dept Neurol, Santiago De Compostela, Spain
[6] Univ Copenhagen, Dept Neurol, Bispebjerg Hosp, DK-1168 Copenhagen, Denmark
[7] Univ Cincinnati, Acad Hlth Ctr, Dept Neurol, Cincinnati, OH 45221 USA
[8] Goethe Univ Frankfurt, Dept Neurol, Frankfurt, Germany
[9] Mashhad Univ Med Sci, Ghaem Hosp, Dept Neurol, Mashhad, Iran
[10] INSERM, Stroke Registry Dijon, F-75654 Paris 13, France
[11] Massachusetts Gen Hosp, Dept Neurol, Boston, MA 02114 USA
[12] Tel Aviv Univ, Tel Aviv Sourasky Med Ctr, Dept Neurol, IL-69978 Tel Aviv, Israel
[13] Univ Calif San Francisco, Dept Neurol, San Francisco, CA 94143 USA
[14] Kings Coll London, Div Hlth & Social Care Res, R&D Guys & St Thomas Fdn Trust, London, England
[15] Charite Univ Med Berlin, Ctr Stroke Res Berlin, Berlin, Germany
[16] Turku Univ, Cent Hosp, Dept Neurosurg, Turku, Finland
[17] Kawasaki Med Sch, Dept Stroke Med, Kurashiki, Okayama, Japan
[18] Univ E Anglia, Sch Med Hlth Policy & Practice, Norwich NR4 7TJ, Norfolk, England
[19] Norfolk & Norwich Univ Hosp, Dept Med Elderly, Norwich NR4 7TJ, Norfolk, England
[20] Natl Cerebral & Cardiovasc Ctr, Dept Cerebrovasc Med, Osaka, Japan
[21] Univ Siena, Neurol Unit, Dept Neurosci, I-53100 Siena, Italy
[22] Hosp del Mar, Unitat Ietus, Barcelona, Spain
[23] Univ Oulu, Dept Neurol, Oulu, Finland
[24] Kellokoski Hosp, Dept Neuropsychiat & Psychogeriatr, Tuusula, Finland
[25] KTL Natl Publ Hlth Inst, Dept Epidemiol & Hlth Promot, Helsinki, Finland
[26] Kuopio Univ Hosp, Brain Res & Rehabil Ctr Neuron, SF-70210 Kuopio, Finland
[27] Niigata Univ, Brain Res Inst, Dept Neurosurg, Niigata 95021, Japan
[28] Univ Tehran Med Sci, Sina Hosp, Dept Neurol, Tehran, Iran
[29] Jagiellonian Univ, Coll Med, Dept Neurol, Krakow, Poland
[30] Univ Athens, Sch Med, Alexandra Hosp, Dept Clin Therapeut,Acute Stroke Unit, GR-11527 Athens, Greece