No abstract available
MeSH terms
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Blastocyst / cytology*
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Cohort Studies
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Embryo Implantation / physiology*
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Embryo Transfer / statistics & numerical data*
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Female
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Fertilization in Vitro*
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Humans
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Pregnancy
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Pregnancy, Multiple / statistics & numerical data*
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Twins, Monozygotic*
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Zygote / cytology*