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To identify the incidence, risk factors, and obstetric/perinatal outcomes associated with monozygotic twins (MZTs) after IVF.Nested case-control.University-based center.The IVF cycles eventuating in pregnancy from 2000–2009.None.The MZT incidence, chorionicity/zygosity, pregnancy/neonatal outcome.Of 6,223 gestations, 131 MZTs were diagnosed (2.1% incidence; 2.0% in autologous and 2.7% in donor IVF...
To characterize incidence, chorionicity, amnionicity, and pregnancy outcome for monozygotic twin pregnancy (MZT) after IVF.Retrospective review.University-based fertility center.Autologous and oocyte donation IVF cycles eventuating in 4,976 clinical gestations from 2000 to 2007.None.MZT incidence, chorionicity, zygosity, pregnancy outcome.Ninety-eight MZTs were diagnosed after first-trimester ultrasound...
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