Perinatal outcomes in children born after fresh or frozen embryo transfer: a Catalan cohort study based on 14,262 newborns

Perinatal outcomes are not negatively affected by vitrification, and differences between fresh and frozen embryos are only observed after controlled ovarian hyperstimulation.

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Volume 107, Issue 4, Pages 940–947


Mar Vidal, M.D., Kilian Vellvé, M.D., Mireia González-Comadran, M.D., Ana Robles, Ph.D., Maria Prat, Ph.D., Mar Torné, M.D., Ramón Carreras, Ph.D., Miguel A. Checa, Ph.D.


Perinatal outcomes are negatively affected by COH and not affected by the vitrification process.

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Fertility and Sterility

Editorial Office, American Society for Reproductive Medicine

Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders.