Trial Management TeamAssociate Professor Richard Bryant (Chief Investigator, Nuffield Department of Surgical Sciences, University of Oxford)Jessica Scaife(Development Lead, Surgical Intervention Trials Unit, University of Oxford)Amy Taylor(Operational Lead, Surgical Intervention Trials Unit, University of Oxford)Ms Aimi Hewitt(Senior Data Manager, Surgical Intervention Trials Unit, University of Oxford)Ms Roxanne Williams(Trial Manager, Surgical Intervention Trials Unit, University of Oxford)Mr Martyn Hill (Trial Statistician, Surgical Intervention Trials Unit, University of Oxford)Trial Co-ApplicantsProfessor Freddie Hamdy(Nuffield Department of Surgical Sciences, University of Oxford)Professor Jenny Donovan (University of Bristol) Professor Ray Fitzpatrick(University of Oxford)Associate Professor Jane Wolstenholme(Associate Profressor of Health Economics, Nuffield Department of Population Health, University of Oxford) Filipa Landeiro (Health Economist, Health Economics Research Centre, University of Oxford)Associate Professor Clare Verrill (University of Oxford)Professor James Catto(University of Sheffield)Mr Derek Rosario(Sheffield Teaching Hospitals NHS Foundation Trust) Mr Tom Leslie(Oxford University Hospitals NHS Foundation Trust)Dr Daisy Elliott (University of Bristol) Professor Fergus Gleeson(University of Oxford)