E Maclean (Presenting Author) – Queen Mary University of London, London, UK; O Joseph – North Middlesex University Hospital, London, UK; S Patel – North Middlesex University Hospital, London, UK; D de Block Golding – North Middlesex University Hospital, London, UK; S Maden – North Middlesex University Hospital, London, UK; J Boot – North Middlesex University Hospital, London, UK; M Denning – North Middlesex University Hospital, London, UK; R Rear – North Middlesex University Hospital, London, UK