Affiliations

• ¹ Blizard Institute, Queen Mary University of London, London, UK libby.thomas@qmul.ac.uk.
• ² Emergency Department, King's College Hospital NHS Foundation Trust, London, UK.
• ³ Blizard Institute, Queen Mary University of London, London, UK.
• ⁴ Emergency Department, Barts Health NHS Trust, London, UK.
• ⁵ Guy's and St Thomas' Hospitals NHS Trust, London, UK.
• ⁶ Somerset NHS Foundation Trust, Taunton, UK.
• ⁷ Emergency Department, Tunbridge Wells Hospital, Tunbridge Wells, UK.