1. From the Department of Medicine (Neurology); University of Alberta; Edmonton Alberta Canada
2. Comprehensive Stroke Center, Department of Neurology; University of Alabama at Birmingham Hospital; Birmingham AL
3. Department of Neurology; Democritus University of Thrace School of Medicine; Alexandroupolis Greece
4. Service d’Urgences Neuro-Vasculaires, La Timone University Hospital Université de; Méditerranée; Marseille France
5. Department of Neurology; University Hospital Ostrava; Ostrava-Poruba Czech Republic
6. Department of Medicine; National University Hospital; Singapore
7. Service de Neurologie Vasculaire; Universite de Toulouse III; Toulouse France
8. Department of Neurology; University Hospital Lübeck; Lübeck Germany
9. Department of Neurology, Neurosonology Unit, HUG; University Hospital and Medical School of Geneva; Geneva Switzerland
10. Departments of Pediatrics; University of Athens School of Medicine; Athens Greece
11. John W. Scott Health Sciences Library; University of Alberta; Alberta Canada