The planned trial intervention is trimonthly (every 3 months) administration of depot GnRHa (Leuprolide acetate (LA) 11.25 mg intramuscularly) or placebo. Injections would start prior to initiation of chemotherapy, in the luteal phase of the menstrual cycle preceding chemotherapy, and will continue until cessation of chemotherapy (maximum of 6 months or 2 injections). Since only adjuvant/curative chemotherapy patients will be enrolled, chemotherapy will last a maximum of six months.