title: [Hepatitis B virus in 1996].
authors.forename: W
authors.initials: W
authors.lastname: Szata
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology; D012621:Seasons; D017678:Sex Distribution