title: Screening tests for HAA antigen carriers among Budapest school children aged 8 to 12 years.
mesh_terms: D002353:Carrier State; D002648:Child; D006509:Hepatitis B / Q000453:epidemiology*; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D006814:Hungary; D007122:Immunoelectrophoresis; D008403:Mass Screening; D012572:School Health Services
chemical_list: D006511:Hepatitis B Antigens