Farraye, F A Is colonoscopy indicated for small adenomas found by screening flexible sigmoidoscopy? [electronic resource] - Gastrointestinal endoscopy Sep 1999 - 443-4; discussion 444-5 p. digital Publication Type: Journal Article ISSN: 0016-5107 Subjects--Topical Terms: Adenoma--diagnosisAgedCohort StudiesColonic Neoplasms--diagnosisColonoscopy--economicsFemaleFiber Optic TechnologyHumansMaleMass Screening--economicsMiddle AgedProspective StudiesSigmoid Neoplasms--diagnosisSigmoidoscopesSigmoidoscopy--methodsUnnecessary Procedures