title: Hepatitis B virus and sex ratio of offspring.
mesh_terms: D000367:Age Factors; D001722:Birth Order; D003429:Cross Reactions; D005260:Female; D005313:Fetal Death; D006085:Graft Survival; D006509:Hepatitis B / Q000276:immunology / Q000503:physiopathology* / Q000635:transmission; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006801:Humans; D008297:Male; D010298:Parity; D011247:Pregnancy; D012737:Sex Factors; D012744:Sex Ratio
chemical_list: D006514:Hepatitis B Surface Antigens