S Dutta (Presenting Author) – Northampton General Hospital, Northampton; H Sall – Nottingham University Hospital, Nottingham; YC Chan – Northampton General Hospital, Northampton; AS Mahmood – Northampton General Hospital, Northampton; M Pederson – Northampton General Hospital, Northampton; J Timperley – Northampton General Hospital, Northampton; D Sharman – Northampton General Hospital, Northampton