22. Female patients of child-bearing potential must have a negative serum or urine pregnancy test within 7 days prior to planned first dose of treatment, and agree to use dual method of contraception through 90 days after study drug treatment. Approved methods of contraception include an IUD with spermicide, a female condom with spermicide, a diaphragm with spermicide, a cervical cap with spermicide, use of a condom with spermicide by sexual partner or a sterile sexual partner. Women of childbearing potential are defined to include any female who: