1. Department of Radiology, University Hospital Basel, University of Basel, Basel, Switzerland
2. Department of Radiology, University of Calgary, Calgary, Canada
3. Department of Clinical Neurosciences, University of Calgary, Calgary, Canada
4. International Clinical Research Centre, Stroke Research Program, St. Anne´s University Hospital, Brno, Czech Republic
5. Department of Neurology, St. Anne´s University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic
6. Department of Diagnostic Imaging, Warren Alpert School of Medicine at Brown University, Providence, RI, USA
7. Department of Neurology, Warren Alpert School of Medicine at Brown University, Providence, RI, USA
8. Department of Neurosurgery, Warren Alpert School of Medicine at Brown University, Providence, RI, USA
9. The Norman Prince Neuroscience Institute, Rhode Island Hospital, Providence, RI, USA