title: [Efficiency of serial x-ray examinations in Nordrhein].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D005860:Germany, West; D006801:Humans; D008297:Male; D008400:Mass Chest X-Ray / Q000592:standards* / Q000706:statistics & numerical data; D008875:Middle Aged; D012189:Retrospective Studies; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging
vernacular_title: Die Effizienz der Röntgen-Reihenuntersuchungen in Nordrhein