title: A three and half year follow-up study of HBs-Ag carrier state in asymptomatic mothers.
mesh_terms: D002353:Carrier State / Q000453:epidemiology*; D005260:Female; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000453:epidemiology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D007194:India; D011247:Pregnancy
chemical_list: D006514:Hepatitis B Surface Antigens