1. Acute Stroke Unit, Metropolitan Hospital, Ethnarhou Makariou 9, Athens, Piraeus 18547, Greece
2. Second Department of Neurology, Attikon University Hospital, School of Medicine, University of Athens, Athens, Greece
3. Division of Neurology, McMaster University/Population Health Research Institute, Hamilton, Canada
4. Department of Interventional Neuroradiology, Metropolitan Hospital, Piraeus, Greece
5. Acute Stroke Unit, Metropolitan Hospital, Piraeus, Greece
6. Second Department of Radiology, Division of Interventional Radiology, School of Medicine, National and Kapodistrian University of Athens, Attikon University General Hospital, Athens, Greece