1. Stroke Unit, Department of Neurology, Brugmann University Hospital, Brussels, Belgium
2. Nuclear Medicine Department, Brugmann University Hospital, Brussels, Belgium
3. Second Department of Neurology, University of Athens, School of Medicine, “Attikon” University Hospital, Athens, Greece
4. Third Department of Surgery, School of Medicine, University of Athens, Athens, Greece
5. International Clinical Research Center, St. Anne's University Hospital in Brno, Czech Republic