1. Stroke Unit Metropolitan Hospital Piraeus Greece
2. Second Department of Neurology National & Kapodistiran University of Athens, School of Medicine, “Attikon” University Hospital Athens Greece
3. First Department of Neurology National & Kapodistiran University of Athens, School of Medicine, “Eginition” University Hospital Athens Greece
4. Second Department of Neurology Aristotle University of Thessaloniki, School of Medicine, Faculty of Health Sciences, AHEPA University Hospital Thessaloniki Greece
5. Department of Interventional Radiology AHEPA University General Hospital, Aristotle University of Thessaloniki Thessaloniki Greece
6. Department of Neurology The University of Tennessee Health Science Center Memphis Tennessee USA