title: A logistic reanalysis of Ashford and Sowden's data on respiratory symptoms in British coal miners.
mesh_terms: D000328:Adult; D000367:Age Factors; D003032:Coal Mining; D004417:Dyspnea / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D008954:Models, Biological; D012140:Respiratory Tract Diseases / Q000453:epidemiology* / Q000209:etiology; D006113:United Kingdom