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Graphic representation of the effect of serum P values on implantation and live birth based on ovarian response. Progesterone values (ng/ml) are plotted on the x-axis, and implantation (A and B) and live birth (C and D) are indicated on the y-axis. Actual implantation (A) and live birth (C) are shown per serum P value. Linear trend lines for implantation (B) and live birth (D) are shown per serum P value. hCG = human chorionic gonadotropin; P = progesterone.
