[Clinico-epidemiologic study of chronic bronchitis in people over 65 years of age].
D000368:Aged; D001991:Bronchitis / Q000175:diagnosis / Q000453:epidemiology*; D002908:Chronic Disease; D003604:Czechoslovakia; D005260:Female; D006801:Humans; D008297:Male; D012907:Smoking
Klinicko-epidemiologická stúdia o chronickej bronchitíde u osôb starsích ako 65 rokov.