Abstract
There was a significant difference in the sex ratio between offspring from fresh and from vitrification-thawed blastocyst transfer. The live birth sex ratio influenced by the blastocyst-stage embryo transfer correlated with top-quality embryo morphology.
MeSH terms
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Blastocyst*
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Child of Impaired Parents / statistics & numerical data*
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Cohort Studies
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Cryopreservation*
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Embryo Transfer / methods*
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Embryo Transfer / statistics & numerical data
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Female
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Humans
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Infant, Newborn
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Infertility / therapy
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Male
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Pregnancy
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Pregnancy, Multiple / statistics & numerical data
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Retrospective Studies
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Sex Ratio*
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Sperm Injections, Intracytoplasmic