Darren K. Patten, BSc(Hons), MBBS, MRCS(Eng), Wellcome Trust clinical research fellow and specialist trainee in general surgery (London Deanery), Department of Surgery and Cancer, The Imperial Centre for Translational and Experimental Medicine, Imperial College London, UK David M. Layfield, BSc(Hons), MBBS, MRCS(Eng), CRUK clinical research fellow and specialist trainee in general surgery (Yorkshire and Humber Deanery), University of Southampton, UK Shobit Arya, BSc(Hons), MBBS, MRCS(Eng), clinical research fellow, Department of Biosurgery and Surgical Technology, QEQM, St. Mary's Hospital, Imperial College London, UK Daniel R. Leff, MBBS, PhD, FRCS(Gen Surg), clinical lecturer in surgery, Hamlyn Centre for Robotic Surgery, Imperial College London, UK Paraskevas A. Paraskeva, MBBS(Hons), PhD, FRCS(Gen Surg), reader in surgery and consultant colorectal surgeon, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London, UK Editorial Advisor Ara Darzi, KBE, HonFREng, FMedSci, professor of surgery and head of department, Paul Hamlyn Chair of Surgery, Department of Biosurgery and Surgical Technology, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics, Faculty of Medicine, Imperial College London, UK