Results of questionnaire on relation of exertion to myocardial infarction.
D002318:Cardiovascular Diseases; D006801:Humans; D009203:Myocardial Infarction / Q000209:etiology*; D005082:Physical Exertion; D011795:Surveys and Questionnaires; D014937:Work
MYOCARDIAL INFARCT/etiology and pathogenesis; WORK