Fetal loss in Down syndrome pregnancies.
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D000022:Abortion, Spontaneous / Q000453:epidemiology*; D000328:Adult; D004314:Down Syndrome / Q000196:embryology / Q000453:epidemiology*; D005260:Female; D005865:Gestational Age; D006801:Humans; D015233:Models, Statistical; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000592:standards; D006113:United Kingdom / Q000453:epidemiology