title: CT colonography for diagnosis of symptomatic colorectal cancer: the SIGGAR trials and their implication for service delivery.
authors.forename: S
authors.initials: S
authors.lastname: Halligan
authors.forename: W S
authors.initials: WS
authors.lastname: Atkin
mesh_terms: D023881:Colonography, Computed Tomographic; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging*; D003695:Delivery of Health Care; D006801:Humans; D016032:Randomized Controlled Trials as Topic