title: Validity of health screening programs.
authors.forename: W L
authors.initials: WL
authors.lastname: Marr
mesh_terms: D003415:Crime / Q000517:prevention & control*; D004992:Ethics, Medical; D005251:Fees, Medical; D005607:Fraud / Q000517:prevention & control*; D006801:Humans; D007348:Insurance, Health; D008403:Mass Screening / Q000191:economics