title: Incidence of hepatitis-associated antigen in Spanish blood donors.
mesh_terms: D001219:Aspartate Aminotransferases / Q000097:blood; D001782:Blood Donors; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus; D006801:Humans; D013030:Spain
chemical_list: D006511:Hepatitis B Antigens; D001219:Aspartate Aminotransferases