Tedesco, F J Role of colonoscopy in patients with unexplained melena: analysis of 53 patients. [electronic resource] - Gastrointestinal endoscopy Nov 1981 - 221-3 p. digital Publication Type: Journal Article ISSN: 0016-5107 Standard No.: 10.1016/s0016-5107(81)73226-7 doi Subjects--Topical Terms: AdolescentAdultAgedColonic Diseases--diagnosisColonic Neoplasms--diagnosisColonoscopyCrohn Disease--diagnosisDiverticulum, Colon--diagnosisFemaleFiber Optic TechnologyHumansIntestinal Polyps--diagnosisMaleMelena--diagnosisMiddle AgedRetrospective Studies