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To evaluate if an elevated progesterone (P) level on the day of human chorionic gonadotropin (hCG) administration is associated with a decrease in live-birth rate in patients with a good prognosis.Retrospective cohort study.Large, private, assisted reproductive technology (ART) practice.One thousand six hundred twenty fresh autologous ART cycles.None.Live-birth rate.A total of 934 blastocyst and 686...
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