title: Beware red colouring on toilet paper.
authors.affiliation: Poole Hospital, Poole BH15 2JB, UK.
authors.forename: Guy F
authors.initials: GF
authors.lastname: Nash
mesh_terms: D015179:Colorectal Neoplasms / Q000150:complications* / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D010209:Paper / Q000592:standards*; D011634:Public Health