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Medline, CINAHL, EMBASE/Excerpta Medica, PsycINFO, AMED, SIGLE, HMIC, and Cochrane Library (to Feb 2006); reference lists; and study investigators.
Study selection and assessment:
randomised controlled trials (RCTs) that compared screening for colorectal cancer in adults using repeated faecal occult blood tests (guiac or immunochemical) with no screening. 4 RCTs were included (age 45–75 y, length of follow-up 8.5–18.4 y). Quality of study methods was …
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