To demonstrate the comparative safety and efficacy of Cetrotide® 3 milligram (mg) and Antagon™ in the inhibition of a premature luteinizing hormone (LH) surge in women undergoing ovarian stimulation with recombinant human follicle stimulating hormone/human menopausal gonadotropin (r-hFSH/hMG) prior to assisted reproductive technology (ART) and utilizing oral contraceptives pill (OCP) for cycle programming.

Inclusion Criteria:

• Infertile women wishing to conceive whose physician had recommended that she can undergo ART
• Aged 18-39 years (inclusive)
• Regular menstrual cycles every 25-35 days
• Body mass index (BMI) less than 35 kilogram per square meter (kg/m^2)
• Has a transvaginal pelvic ultrasound scan within 6 weeks prior to OCP administration, as well as an Hysterosalpingography (HSG) or hysterosonogram or hysteroscopy within three years prior to OCP administration showing no clinically significant pelvic and/or uterine abnormality, which, in the Investigator's opinion, could impair ovarian response, embryo implantation or pregnancy continuation
• Normal cervical cytology, documented by Pap Smear, within six months prior to OCP administration
• If the subject had prior stimulation cycles, at least a 60-day washout period is required after the last dose of gonadotropin or clomiphene citrate; a 60-day washout is required after the last dose of Lupron® or Lupron Depot® 1-month; a 180-day washout period is required after the last dose of treatment with Depo-Provera® and Lupron Depot® 6-month; a 60-day washout is required after the last dose of oral contraceptives prior to OCP administration in the study
• Screening laboratory results for follicle stimulating hormone (FSH) that are within the normal limit for the early follicular phase at the local laboratory
• Is willing and able to comply with the protocol for the duration of the study
• Has voluntarily provided written informed consent and a subject authorization under Health insurance portability and accountability act (HIPAA), prior to any study-related procedure that is not part of normal medical care, with the understanding that the subject could withdraw consent at any time without prejudice to her future medical care

Exclusion Criteria:

• Clinically significant systemic disease
• Known to be infected with Human Immunodeficiency Virus (HIV)
• Known to be infected with Hepatitis C virus
• Known to test positive for Hepatitis B surface antigens
• Any medical condition, which, in the judgment of the Investigator and Sponsor, may interfere with the absorption, distribution, metabolism or excretion of the study drugs
• Known endometriosis Grade III-IV (American society of reproductive medicine [ASRM] classification)
• Uni- or bilateral hydrosalpinx
• Any contraindication to being pregnant and/or carrying pregnancy to term
• Any previous ART cycle indicating a poor response to gonadotropin stimulation (defined as retrieval of three oocytes or less)
• If, in a previous ART attempt, there are no motile sperm before or after the sperm processing with ejaculated, epididymal, testicular, fresh or frozen/thawed spermatozoa
• Three or more previous consecutive ART cycles without a clinical pregnancy
• An extrauterine pregnancy within the last three months before OCP treatment commences
• Abnormal, undiagnosed, gynecological bleeding
• Known allergy or hypersensitivity to human gonadotropin preparations or any other study-related medications
• Known current substance abuse
• Previous participation in this study or simultaneous participation in another clinical trial
• Current smoker