title: Differences in clinical performance.
authors.affiliation: Department of Public Health and Epidemiology, University of Birmingham, Birmingham B15 2TT, UK.
authors.forename: T
authors.initials: T
authors.lastname: Marshall
authors.forename: M A
authors.initials: MA
authors.lastname: Mohammed
mesh_terms: D002983:Clinical Competence; D015179:Colorectal Neoplasms / Q000401:mortality* / Q000601:surgery; D013502:General Surgery / Q000592:standards*; D006801:Humans; D008485:Medical Audit; D011787:Quality of Health Care; D016896:Treatment Outcome