Editor-in-chief: Rory Mackinnon BSc MBChb Foundation Year 2 doctor, Northern General Hospital, Sheffield, UK Series Editors: Sally Keat BMedSci MBChB Foundation Year 1 doctor, Northern General Hospital, Sheffield, UK Thomas Locke BSc MBChB Foundation Year 1 doctor, Northern General Hospital, Sheffield, UK Andrew Walker BMedSci MBChB Specialist Trainee Year 1 doctor in Medicine, Chesterfield Royal Hospital, Chesterfield, Derbyshire, UK