Which is the most appropriate pharmacotherapy for this patient’s infertility? A 32-year old woman comes to the physician because she has not been able to conceive for 5 years. Previous fertility examinations of her husband showed no abnormalities. Menses occur at regular 28-day intervals. Her blood pressure is 110/70 mm Hg. Physical and pelvic examinations show no abnormalities. Hysterosalpingography shows normal findings. Her serum hormone concentrations are within the reference range.