title: Colonoscopy: diagnostic yield of flexible sigmoidoscopy and CTC.
authors.forename: Perry J
authors.initials: PJ
authors.lastname: Pickhardt
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D023881:Colonography, Computed Tomographic / Q000379:methods*; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D006801:Humans; D012680:Sensitivity and Specificity; D012812:Sigmoidoscopy / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*