1. Public Health Sciences, University of Edinburgh Medical School, Edinburgh, United Kingdom.
2. Stroke Team, Queen Elizabeth Hospital, Gateshead, United Kingdom.
3. Department of Biostatistics, Virginia Commonwealth University, Richmond, Virginia.
4. Addenbrooke's Hospital, Cambridge, United Kingdom.
5. Department of Neurosurgery, Newcastle General Hospital, Newcastle upon Tyne, United Kingdom.
6. Cardiovascular and Medical Sciences, University of Glasgow, Gardiner Institute, Western Infirmary, Glasgow, United Kingdom.
7. Department of Neurosurgery, Erasmus University MC Rotterdam, Rotterdam, The Netherlands.
8. Division of Neurosurgery, Virginia Commonwealth University, Richmond, Virginia.
9. Department of Public Health, Erasmus University MC Rotterdam, Rotterdam, The Netherlands.
10. Royal College of Physicians and Surgeons of Glasgow, Glasgow, United Kingdom.
11. Cardiovascular and Medical Sciences, University of Glasgow, Gardiner Institute, Western Infirmary, and Robertson Centre for Biostatistics, University of Glasgow, Glasgow, United Kingdom.