1. Second Department of Neurology Attikon University Hospital National & Kapodistrian University of Athens Athens
2. Department of Neurology University of Ioannina Ioannina Greece
3. Departments of Neurology and Neurogeriatry Johannes Wesling Medical Center Ruhr University Bochum Minden
4. Department of Neurology Universitätsklinikum Essen Essen Germany
5. J. P. Kistler Stroke Research Center Massachusetts General Hospital Boston MA USA
6. Stroke Unit and Division of Cardiovascular Medicine University of Perugia Perugia Italy
7. Department of Neurology University Hospital of Geneva Geneva Switzerland
8. Department of Neurology University of Tennessee Health Science Center Memphis TN USA