title: Limitations of the randomized trial for the early detection of cancer: a clinical perspective.
authors.forename: C R
authors.initials: CR
authors.lastname: Smart
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000175:diagnosis*; D016032:Randomized Controlled Trials as Topic / Q000379:methods*