Investigating rectal bleeding: red faced or reliable?
Macrae
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D000367:Age Factors; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D017410:Practice Guidelines as Topic; D012007:Rectum; D012307:Risk Factors; D012812:Sigmoidoscopy