The predictive value of a postal questionnaire on cardio-respiratory symptoms

• 30 November 1970
• journal article
• Published by Elsevier in Journal of Chronic Diseases
• Vol. 23  (5) , 411-421
• https://doi.org/10.1016/0021-9681(70)90025-1

Abstract

Keywords

• CORONARY HEART DISEASE
• DEATH
• QUESTIONNAIRE
• RESPIRATORY SYMPTOMS
• POSTAL
• ANSWERING
• CARDIO