title: [Viral hepatitis - 1980].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology* / Q000401:mortality; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011044:Poland; D012424:Rural Population; D012621:Seasons; D012737:Sex Factors; D014505:Urban Population
chemical_list: D006511:Hepatitis B Antigens
vernacular_title: Wirusowe zapalenie watroby - 1980 rok.