^aEmergency Department, Homerton University Hospital

^bEmergency Department, Whipps Cross Hospital, Barts Health NHS Trust

^cEmergency Department, Royal London Hospital, Barts Health NHS Trust

^dBlizard Institute, Queen Mary University of London, London

^eEmergency Department, Bristol Royal Infirmary, University Hospital Bristol and Weston NHS Trust, Bristol, UK

Received 16 January 2022 Accepted 2 December 2022

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Correspondence to Nicholas Moore, MBCHB, Emergency Department, Bristol Royal Infirmary, University Hospital Bristol and Weston NHS Trust, Upper Maudlin Street, Bristol, BS2 8HW, UK , Tel: +44 0117 923 0000; e-mail: [email protected]