title: Investigating rectal bleeding: red faced or reliable?
authors.forename: F
authors.initials: F
authors.lastname: Macrae
mesh_terms: 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