title: [Prevention. What is the value of preventive colonoscopy?].
authors.forename: Peter
authors.initials: P
authors.lastname: Stiefelhagen
mesh_terms: D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000517:prevention & control*; D042241:Early Diagnosis; D019317:Evidence-Based Medicine; D005858:Germany; D006801:Humans; D008403:Mass Screening