title: Spontaneous abortion.
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology / Q000209:etiology*; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000150:complications; D005260:Female; D006801:Humans; D011247:Pregnancy; D012008:Recurrence