5. Females of childbearing potential must agree to use contraception and must agree to continue using this method for at least 3 months after enrollment. All females under the age of 60 must have a negative urine pregnancy test at enrollment. Those that have a history of tubal ligation or hysterectomy or are postmenopausal at least 1 year of no menses may be included but must still have a negative urine pregnancy test at enrollment. Acceptable forms of hormonal contraception include the use of oral contraceptives, injectable contraceptives (ie, Depo-ProveraTM) or transdermal contraceptives for a period of 3 months prior to enrollment.