The predictive value of a postal questionnaire on cardio-respiratory symptoms.
D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000401:mortality; D001991:Bronchitis / Q000401:mortality; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000401:mortality*; D003371:Cough; D004812:Epidemiologic Methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007238:Infarction; D008171:Lung Diseases / Q000453:epidemiology / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D009664:Norway; D011177:Postal Service; D011795:Surveys and Questionnaires; D014171:Transients and Migrants; D006113:United Kingdom; D014481:United States