12. Women patients of childbearing potential must have a negative serum/urine pregnancy test at screening and baseline, and be willing to use a medically acceptable form, as judged by Investigator and Sponsor, of contraception (e.g., hormonal birth control, intrauterine device [IUD], or barrier method [male condom, female condom, diaphragm]), plus a spermicidal agent [contraceptive foam, jelly, or cream]) or whose partner had a vasectomy at least 2 years before screening. The patient should be advised to continue the contraception for at least 6 months following the completion of dosing. Women with cessation for > 24 months of previously occurring menses, or women of any age who have had a hysterectomy, or have had both ovaries removed will be considered to be of non-childbearing potential.