title: Letter: Sexual transmission of infections associated with hepatitis-B antigen.
mesh_terms: D001782:Blood Donors; D002353:Carrier State; D003075:Coitus; D005260:Female; D006509:Hepatitis B / Q000209:etiology*; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D011159:Population Surveillance; D012737:Sex Factors; D011477:Sex Work
chemical_list: D006511:Hepatitis B Antigens