[Advances in fetal research].
D000818:Animals; D005260:Female; D005313:Fetal Death; D005318:Fetal Heart / Q000502:physiology; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D012106:Research; D012756:Sheep
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