No abstract available
MeSH terms
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Amnion
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Cardiotocography*
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Chorion
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Diseases in Twins / diagnosis*
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Female
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Fetal Diseases / diagnosis*
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Heart Rate, Fetal / physiology
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Humans
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Pregnancy
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Pregnancy Complications
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Twins, Monozygotic
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Ultrasonography, Prenatal
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Umbilical Cord / physiopathology