title: Screening for colorectal cancer.
authors.forename: J A
authors.initials: JA
authors.lastname: Nelson
mesh_terms: D001466:Barium Sulfate; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging / Q000517:prevention & control*; D004733:Enema; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D011859:Radiography
chemical_list: D001466:Barium Sulfate