title: Analytic strategies in hospital epidemiology: case-control studies.
authors.affiliation: Department of Pediatrics, Yale School of Medicine, New Haven, CT 06510-8064.
authors.forename: E D
authors.initials: ED
authors.lastname: Shapiro
mesh_terms: D003428:Cross Infection / Q000453:epidemiology*; D004812:Epidemiologic Methods; D006801:Humans