title: Dyschromatopsia (number 97) and rectal bleeding.
authors.affiliation: Department of Surgery, East Glamorgan NHS Trust, Mid Glamorgan.
authors.forename: G J
authors.initials: GJ
authors.lastname: Stiff
authors.forename: P N
authors.initials: PN
authors.lastname: Haray
authors.forename: M E
authors.initials: ME
authors.lastname: Foster
mesh_terms: D003117:Color Vision Defects / Q000150:complications*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000209:etiology; D006484:Hemorrhoids / Q000150:complications; D006801:Humans; D012002:Rectal Diseases / Q000175:diagnosis* / Q000209:etiology; D012811:Sigmoid Neoplasms / Q000150:complications