[The epidemiology of viral hepatitis].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003604:Czechoslovakia; D006525:Hepatitis, Viral, Human / Q000453:epidemiology*; D006760:Hospitalization; D006801:Humans; D008875:Middle Aged; D012621:Seasons
K niektorým otázkam epidemiológie vírusovej hepatitídy