title: Pregnancies associated with low maternal serum alpha-fetoprotein concentrations.
mesh_terms: D000022:Abortion, Spontaneous / Q000097:blood; D005260:Female; D005313:Fetal Death; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood*; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins