title: Colorectal cancer screening.
authors.forename: R A
authors.initials: RA
authors.lastname: Clark
authors.forename: R D
authors.initials: RD
authors.lastname: Halpert
mesh_terms: D001466:Barium Sulfate; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D004733:Enema; D006801:Humans; D008403:Mass Screening / Q000379:methods*
chemical_list: D001466:Barium Sulfate