Heather Lewis MBChB MRCP MD Consultant Hepatologist, Charing Cross Hospital, London, UK Ravi Menon MBBS MD MRCP Consultant Endocrinologist, North Middlesex University Hospital, London, UK Luke Moore MBChB MRCP MSc MPH DTM&H FRCPath Consultant Infectious Diseases and Clinical Microbiology, Chelsea and Westminster Hospital, London, UK George Greenhall MBChB BSc MRCP(Neph) Specialist Registrar in Nephrology, Royal London Hospital, Barts Health NHS Trust, London, UK Katherine Stockton BSc(Hons) MSc MBBS MRCP(Neuro) Specialist Registrar in Neurology, Chelsea and Westminster Hospital, London, UK