7. Female participants of childbearing potential must have a negative serum pregnancy within 72 hours prior to receiving the first dose of study medication). They should also be willing to use 2 methods of birth control or be surgically sterile, or abstain from heterosexual activity for the course of the study through 120 days after the last dose of study medication. Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject.