Superovulation will conducted with 100 mg of oral clomiphene citrate (Clomifene; Young Poong Pharmaceutical, Incheon, Korea) for 5 days starting on day 3 of the menstrual cycle, followed by daily injection of 150 IU of human menopausal gonadotropin (hMG;Menogon; FerringPharamceutical Co, Germany). When more than 2 dominant follicles reached a diameter of 17 mm or the urinary specimen showed positive results for luteinizing hormone (LH) surge, 5000 IU of hCG (Pregnyl; Organon, Oss, the Netherlands) was injected intramuscularly. Successful pregnancy after IUI was confirmed by ultrasound as one or more visible gestational sacs in the uterine cavity.
Superovulation will be conducted with 100 mg of oral clomiphene citrate (Clomifene; Young Poong Pharmaceutical, Incheon, Korea) for 5 days starting on day 3 of the menstrual cycle, followed by daily injection of 150 IU of human menopausal gonadotropin (hMG;Menogon; FerringPharamceutical Co, Germany). When more than 2 dominant follicles reached a diameter of 17 mm or the urinary specimen showed positive results for luteinizing hormone (LH) surge, 5000 IU of hCG (Pregnyl; Organon, Oss, the Netherlands) was injected intramuscularly.