J Wilson (Presenting Author) – Croydon University Hospital, Croydon, UK; S Wilson – Croydon University Hospital, Croydon, UK; P Arumugam – Croydon University Hospital, Croydon, UK; J McNicholas – Croydon University Hospital, Croydon, UK; T Su Su – Croydon University Hospital, Croydon, UK; R Killeen – Croydon University Hospital, Croydon, UK; O Rogers – Croydon University Hospital, Croydon, UK; H Heanes – Croydon University Hospital, Croydon, UK; J Jenner – Croydon University Hospital, Croydon, UK; I Perkins – Croydon University Hospital, Croydon, UK; A Rose – Croydon University Hospital, Croydon, UK; H Shabeeh – Croydon University Hospital, Croydon, UK; R Kamdar – Croydon University Hospital, Croydon, UK