title: [Viral hepatitis].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006525:Hepatitis, Viral, Human / Q000453:epidemiology* / Q000401:mortality; D006801:Humans; D007223:Infant; D008875:Middle Aged; D011044:Poland
vernacular_title: Wirusowe zapalenie watroby.