title: What do x-ray surveys teach?
authors.forename: V V
authors.initials: VV
authors.lastname: DRENCKHAHN
authors.forename: E
authors.initials: E
authors.lastname: SIERKS
mesh_terms: D001699:Biometry; D003625:Data Collection; D014376:Tuberculosis / Q000175:diagnosis* / Q000453:epidemiology*; D014965:X-Rays
keywords: TUBERCULOSIS, STATISTICS AND CONTROL