12. All women of child-bearing potential (WCBP), all sexually active male patients, and all partners of patients must agree to use adequate methods of birth control throughout the study. Women of child-bearing potential (defined as being less than 1 year post-menopausal) must have a negative serum or urine β human chorionic gonadotropin (βhCG) pregnancy test; and men and women of reproductive potential must agree to practice an effective method of avoiding pregnancy while receiving study drug and for 30 days after the final dose of study drug. Effective contraception includes use of oral contraceptives with an additional barrier method, double barrier methods (diaphragm with spermicidal gel or condoms with contraceptive foam), Depo-Provera, partner vasectomy, and total abstinence.