Major cancer screening trial launched in 10 U.S. centers.
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D000368:Aged; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D015337:Multicenter Studies as Topic; D009316:National Institutes of Health (U.S.); D009369:Neoplasms / Q000517:prevention & control*; D014481:United States