title: A cardiovascular survey of the chest x-ray in nearly 5,000 life insurance applicants: normal standards and distribution curves for relative heart diameter.
mesh_terms: D000328:Adult; D000368:Aged; D003625:Data Collection; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013902:Radiography, Thoracic; D012016:Reference Values