 - Healthy, postmenopausal women between the ages of 35 and 70 years, inclusive. Postmenopausal females based on medical history defined as 12 continuous months of spontaneous amenorrhea or bilateral oophorectomy. Women 60 years of age and older will be considered postmenopausal. Women 35-59 must have a serum follicle-stimulating hormone FSH result consistent with postmenopausal state. 