Hemoccult screening.
G F
GF
Longstreth
D000740:Anemia / Q000175:diagnosis; D003110:Colonic Neoplasms / Q000175:diagnosis; D003113:Colonoscopy / Q000191:economics; D003365:Costs and Cost Analysis; D006801:Humans; D009780:Occult Blood; D012004:Rectal Neoplasms / Q000175:diagnosis