No abstract available
MeSH terms
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Abortion, Threatened / blood
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Adult
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Chorionic Gonadotropin / administration & dosage
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Corpus Luteum / physiology*
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Estradiol / blood
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Female
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Humans
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Pregnancy Trimester, First
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Pregnancy*
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Progesterone / blood
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Progesterone / metabolism
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Stimulation, Chemical
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Time Factors
Substances
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Chorionic Gonadotropin
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Progesterone
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Estradiol