title: Control of smoking in occupational epidemiologic studies: methods and needs.
authors.affiliation: Occupational Studies Section, National Cancer Institute, Bethesda, MD 20892.
authors.forename: A
authors.initials: A
authors.lastname: Blair
authors.forename: K
authors.initials: K
authors.lastname: Steenland
authors.forename: C
authors.initials: C
authors.lastname: Shy
authors.forename: M
authors.initials: M
authors.lastname: O'Berg
authors.forename: W
authors.initials: W
authors.lastname: Halperin
authors.forename: T
authors.initials: T
authors.lastname: Thomas
mesh_terms: D004812:Epidemiologic Methods; D006801:Humans; D009784:Occupational Diseases / Q000209:etiology*; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*