title: Niagara Falls mass chest X-ray survey.
authors.forename: J A
authors.initials: JA
authors.lastname: CAMPBELL
authors.forename: W
authors.initials: W
authors.lastname: SIEGAL
authors.forename: H E
authors.initials: HE
authors.lastname: WIRTH
mesh_terms: D000059:Accidents; D003625:Data Collection; D006801:Humans; D008400:Mass Chest X-Ray; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary