title: Screening for colorectal cancer.
authors.forename: D A
authors.initials: DA
authors.lastname: Ahlquist
authors.forename: C G
authors.initials: CG
authors.lastname: Moertel
authors.forename: D B
authors.initials: DB
authors.lastname: McGill
mesh_terms: D000368:Aged; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D006801:Humans; D008403:Mass Screening / Q000191:economics; D008875:Middle Aged; D009780:Occult Blood