Birthweights and Down syndrome in neonates that were delivered after frozen‐thawed embryo transfer: The 2007‐2012 Japan Society of Obstetrics and Gynecology National Registry data in Japan

摘要

AimTo evaluate the use of frozen embryos on the outcome of assisted reproductive technology (ART), a retrospective study of the Japanese Assisted Reproductive Technology Registry data during the years 2007‐2012 was conducted.