1. Geoffrey Jefferson Brain Research Centre, Manchester Academic Health Science Centre, Northern Care Alliance & University of Manchester, Manchester, UK
2. Department of Medical Sciences, Uppsala University, Emergency Department, Uppsala University Hospital, Uppsala, Sweden
3. Department of Emergency Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
4. Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
5. Emergency Department Stroke Unit, Policlinico Umberto I, University La Sapienza Rome, Italy
6. Department of Neurology, Inselspital, University Hospital and University of Bern, Bern, Switzerland
7. Neurosurgery Trials Group, Newcastle University, Newcastle, UK
8. Department of Neurosurgery, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
9. Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, The Netherlands
10. Departments of Neurology, Klinikum Frankfurt Höchst, Frankfurt and Heidelberg University Hospital, Heidelberg, Germany
11. Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA