title: Early detection of colorectal carcinoma with a modified guaiactest. A screening examination in 6000 humans.
mesh_terms: D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000453:epidemiology; D005860:Germany, West; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D009780:Occult Blood; D011446:Prospective Studies; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000453:epidemiology