Adam Feather MRCPSpecialist Registrar in Elderly Care, Care of the Elderly Department, Newham General Hospital, Plaistow,LondonPaola Domizio BSc MB BS FRCPath ILTMSenior Lecturer in Histopathology, Department of Histopathology, Barts and the London, Queen Mary's School of Medicine, West Smithfield, LondonBenjamin C T Field MB BS BMedsci MRCPSpecialist Registrar in Endocrinology and Diabetes, Department of Medicine, Charing Cross Hospital, LondonCharles H Knowles MBBChir PhD FRCSSpecialist Registrar in Surgery, North East ThamesHonorary Lecturer in Surgery, Academic Department of Surgery, Royal London Hospital, London and Clinical Lecturer in Academic Surgery, University of LondonJohn S P Lumley MS FRCSProfessor of Surgery and Honorary Consultant Surgeon, St Bartholomew's Hospital, LondonMember of Council, Royal College of Surgeons of EnglandPast World President, International College of Surgeons