title: Explaining recent declines in colorectal cancer incidence: was it the sigmoidoscope?
authors.forename: J V
authors.initials: JV
authors.lastname: Selby
mesh_terms: D015179:Colorectal Neoplasms / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008403:Mass Screening / Q000379:methods*; D011379:Prognosis; D012812:Sigmoidoscopy; D015996:Survival Rate; D014481:United States / Q000453:epidemiology