title: Hepatitis-associated antigen: a possible relationship to premature delivery.
mesh_terms: D000293:Adolescent; D000328:Adult; D001724:Birth Weight; D005260:Female; D006509:Hepatitis B / Q000150:complications*; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature / Q000209:etiology*; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious
chemical_list: D006511:Hepatitis B Antigens