[1] Univ London Imperial Coll Sci Technol & Med, Imperial Coll Healthcare NHS Trust, Dept Clin Pharmacol & Therapeut, Hammersmith, England
[2] Imperial Coll Healthcare NHS Trust, Charing Cross Hosp, London, England
[3] Charing Cross Hosp, Dept Stroke Med, London, England
[4] Charing Cross Hosp, Hyper Acute Stroke Unit Lead, Imperial Coll Healthcare NHS Trust, London, England