title: [Proceedings: Australia antigen among blood donors in Silistra District].
mesh_terms: D001782:Blood Donors; D002031:Bulgaria; D005260:Female; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D008297:Male; D012737:Sex Factors
chemical_list: D006511:Hepatitis B Antigens
vernacular_title: Avstraliĭski antigen vsred kruvodaritelite v Silistrenski  okrug