title: [Long-term observation of HBsAg positive patients and carriers (author's transl)].
mesh_terms: D002353:Carrier State / Q000276:immunology*; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000276:immunology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans
chemical_list: D006514:Hepatitis B Surface Antigens