title: Maternal serum alpha fetoprotein concentration and fetal sex.
authors: B
authors: B
authors: Petrikovsky
mesh_terms: D000649:Amniocentesis; D005260:Female; D005333:Fetus; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D012189:Retrospective Studies; D012732:Sex Determination Analysis; D012737:Sex Factors; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D000509:alpha-Fetoproteins