Sukhpreet Singh Dubb BSc (Hons) MBBS AICSM Final Year Medical Student, Department of Investigative Medicine and Academic Surgery, Imperial College London Kumaran Shanmugarajah BSc (Hons) MBBS AICSM FY2 Doctor, Northwest Thames Deanery, Imperial College Healthcare Trust, London Darren K Patten BSc (Hons) MBBS AICSM Academic Clinical Fellow and Core Surgical Trainee, London Deanery, Department of Biosurgery and Surgical Oncology, St Mary’s Hospital, Imperial College Healthcare Trust, London, UK Michael Schachter BSc MB FRCP Department of Clinical Pharmacology, National Heart and Lung Institute, Imperial College London Cristina Koppel BSc MBBS (AICSM) Neurology Registrar, Fellow in Medical Education, Chelsea and Westminster Hospital, Imperial College School of Medicine, London Editorial Advisor Karim Meeran Professor of Endocrinology, Imperial College London MEDICINE 500 Single Best Answers in