Detection of angina pectoris of effort in a population using a postal questionnaire.
D000328:Adult; D000787:Angina Pectoris / Q000175:diagnosis* / Q000453:epidemiology; D003604:Czechoslovakia; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis; D005082:Physical Exertion; D011177:Postal Service; D011795:Surveys and Questionnaires