title: [Ecology of HBsAg in an institution for the mentally retarded and muscular dystrophy (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002353:Carrier State / Q000276:immunology*; D002547:Cerebral Palsy; D002648:Child; D002675:Child, Preschool; D005260:Female; D006509:Hepatitis B / Q000276:immunology*; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D007564:Japan; D008297:Male; D009136:Muscular Dystrophies; D012112:Residential Facilities
chemical_list: D006511:Hepatitis B Antigens