title: [Follow-up study on the morbidity of viral hepatitis in Czechoslovakia].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003604:Czechoslovakia; D006506:Hepatitis A / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012189:Retrospective Studies
vernacular_title: Longitudinálne sledovanie chorobnosti na vírusovú hepatitídu v CSS.