title: [A study on the infectivity of the asymptomatic HBsAg carrier and its role in the transmission of hepatitis B virus].
authors.forename: Q L
authors.initials: QL
authors.lastname: Song
mesh_terms: D000328:Adult; D002353:Carrier State / Q000635:transmission*; D002681:China; D006509:Hepatitis B / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans
chemical_list: D006514:Hepatitis B Surface Antigens