9. Female patients with reproductive potential must have a negative urine or serum pregnancy test within 14 days prior to start of trial. Both women and men must agree to use a medically acceptable method of contraception throughout the treatment period and for 16 weeks after discontinuation of treatment. Oral contraception and parenteral hormonal contraceptives (patches, injectables and implants) that may be affected by enzyme-inducing drugs should only be used in combination with a barrier method. All males with partners of childbearing potential or whose partners are pregnant must use barrier contraception for the duration of dosing and for 16 weeks post-dosing.