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Figure 2 | Reproductive Biology and Endocrinology

Figure 2

From: Human chorionic gonadotropin administration is associated with high pregnancy rates during ovarian stimulation and timed intercourse or intrauterine insemination

Figure 2

Clinical pregnancy rates according to hCG administeration and occurrence of LH-surge among different stimulation protocols. A) Comparison between clinical pregnancy rate in cycles in which hCG was given with or without an LH-surge versus cycles in which hCG was not given (LH-surge alone). Combined intrauterine insemination and timed-intercourse cycles, both polycystic ovarian syndrome and unexplained infertility patients. Control (Cont), clomiphene citrate (CC), FSH (F), and letrozole (Let). B) Comparison between clinical pregnancy rates in cycles in which an LH-surge occurred (with or without hCG administration) versus cycles in which LH-surge did not occur. Combined intrauterine insemination and timed-intercourse cycles, both polycystic ovarian syndrome and unexplained infertility patients. Control (Cont), clomiphene citrate (CC), FSH (F), and letrozole (Let).

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