[1] Charite, Dept Neurol, Berlin, Germany
[2] Univ Hosp Saarland, Dept Neurol, Homburg, Germany
[3] Cerebrovasc Ctr, Cleveland, OH USA
[4] Med Pk Berlin Humboldtmuhle, Berlin, Germany
[5] Hop St Anne, Dept Neurol, Paris, France
[6] Univ Melbourne, Royal Melbourne Hosp, Parkville, Vic, Australia
[7] Univ Tennessee, Ctr Hlth Sci, Coll Nursing, Memphis, TN 38163 USA
[8] Univ Tennessee, Ctr Hlth Sci, Dept Neurol, Coll Med, Memphis, TN 38163 USA
[9] Mem Hermann Hosp, 6410 Fannin St,Suite 1423, Houston, TX 77030 USA