title: Epidemiology of hepatitis b antigenemia in an institution for mentally retarded.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002353:Carrier State; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000382:microbiology; D005260:Female; D005387:Finland; D005581:Foster Home Care; D006511:Hepatitis B Antigens / Q000032:analysis*; D006760:Hospitalization; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000382:microbiology*; D008297:Male; D012737:Sex Factors
chemical_list: D006511:Hepatitis B Antigens