title: Unbiased studies are needed before virtual colonoscopy can be dismissed.
authors.affiliation: Department of Intestinal Imaging and Cancer Research UK Colorectal Cancer Unit, St Mark's Hospital, Northwick Park, Middlesex HA1 3UJ, UK. s.halligan@imperial.ac.uk
authors.forename: Steve
authors.initials: S
authors.lastname: Halligan
authors.forename: Wendy
authors.initials: W
authors.lastname: Atkin
mesh_terms: D002983:Clinical Competence; D023881:Colonography, Computed Tomographic; D015179:Colorectal Neoplasms / Q000175:diagnosis; D006801:Humans; D012680:Sensitivity and Specificity