title: Consensus on colorectal screening still difficult to achieve.
authors: M
authors: M
authors: Miller
mesh_terms: D002986:Clinical Trials as Topic; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D006801:Humans; D008403:Mass Screening / Q000379:methods* / Q000592:standards; D009780:Occult Blood; D012812:Sigmoidoscopy