Heart rate and velocity variability in the human fetus.
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D001783:Blood Flow Velocity / Q000502:physiology*; D018376:Cardiovascular Abnormalities / Q000000981:diagnostic imaging; D005260:Female; D005333:Fetus / Q000502:physiology*; D006340:Heart Rate, Fetal / Q000502:physiology*; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D018608:Ultrasonography, Doppler; D016216:Ultrasonography, Prenatal; D014469:Umbilical Arteries / Q000000981:diagnostic imaging / Q000502:physiology