A cardiovascular survey of British postal workers.
D000328:Adult; D001794:Blood Pressure; D001824:Body Constitution; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009790:Occupations; D012189:Retrospective Studies; D012907:Smoking; D006113:United Kingdom