[Necessity for the use of epidemiological methods in the study of chronic disease].
D002318:Cardiovascular Diseases / Q000453:epidemiology* / Q000401:mortality; D002908:Chronic Disease; D003604:Czechoslovakia; D003710:Demography; D006801:Humans; D012106:Research
Nezbytnost pouzívání epidemiologických metod k studiu chronických nemocí