We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOnce-only flexible sigmoidoscopy screening reduced colorectal cancer incidence and mortalityAuthorsKoretz, Ronald L.PublicationAnnals of Internal Medicine, 2010, Vol 153, Issue 8, pJC4ISSN0003-4819Publication typearticleDOI10.7326/0003-4819-153-8-201010190-02004