1 Department of Neurology and Stroke Center, University Hospital Basel, University of Basel, Basel, Switzerland.
2 Department of Radiology, University Medical Center Utrecht, University The Netherlands, Utrecht, the Netherlands.
3 Department of Pediatric Neurology, Leiden University Medical Center, Leiden University, Leiden, the Netherlands.
4 Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, University of Basel, Basel, Switzerland.
5 Department of Neurology, Academic Medical Center, Amsterdam, the Netherlands.
6 Department of Radiology, Freeman Hospital, Newcastle upon Tyne, UK.
7 Academic Neuroradiological Unit, Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, London, UK.
8 Department of Vascular Surgery, University Hospital Basel, University of Basel, Basel, Switzerland.
9 Department of Neurology and Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
10 Institute of Neuroradiology, Clinic Hirslanden, Zurich, Switzerland.
11 Division of Surgery and Interventional Sciences, University College London, London, UK.
12 Department of Vascular Surgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
13 Neurorehabilitation Unit, University Center for Medicine of Aging and Rehabilitation Basel, Felix Platter Hospital, University of Basel, Basel, Switzerland.
14 Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, London, UK.